まるまる(丸々)means 'completely, entirely, wholly.' Option 3 says 'My hard-won idea was entirely/completely used by someone,' which is the correct usage. まるまる modifies the verb 使われてしまった, indicating the idea was taken whole.
1まるまる cannot be used as a noun meaning 'for all the people who came.' The sentence is grammatically incoherent.
2まるまる is not a na-adjective meaning 'a great success' or 'well-received.' This usage does not exist.
4まるまる cannot modify 寝ている to mean 'sleeping soundly' or 'curled up.' The intended word might be 丸まって (curling up), but まるまる is an adverb meaning 'entirely,' not a way to describe sleeping posture.
まるまる(丸々) — completely, entirely, wholly (often used when something is taken/used in its entirety)
2.交付
1国から各大学に補助金が交付された。
2国民には国に税金を交付する義務がある。
3今月の給料が交付されたら、新しいくつを買うつもりだ。
4隣の人に旅行のおみやげを交付した。
Show answer
Answer: 1. 国から各大学に補助金が交付された。
交付(こうふ)means 'to issue, grant, or officially hand over (funds, documents, certificates, etc.)' by a public/official body. Option 1 says 'Subsidies were granted by the government to each university,' which is the correct usage — 補助金 being officially issued is a perfect collocation.
2You don't 交付 taxes to the government; you 納める(おさめる)or 支払う taxes. 交付 is something an authority issues TO someone, not something a citizen gives TO the government.
3Salary is 支払われる(しはらわれる)'paid,' not 交付される. 交付 is for official documents/grants, not wages.
4Giving a souvenir to a neighbor is 渡す(わたす)or あげる, not 交付する. 交付 carries an official/formal connotation inappropriate for a personal gift.
交付 — to issue, to grant (officially), to hand over (funds, certificates, licenses, etc. by an authority)
3.軽率
1お酒は軽率を引き起こしますから、気をつけましょう。
2人を軽率に批判するのはやめた方がいい。
3よく考えないで軽率してはいけない。
4私の軽率の行動で、多くの人に迷惑をかけてしまった。
Show answer
Answer: 2. 人を軽率に批判するのはやめた方がいい。
軽率(けいそつ)is a na-adjective meaning 'rash, thoughtless, careless.' In option 2, 軽率に functions as an adverb modifying 批判する: 'You should stop carelessly/rashly criticizing people.' This is correct usage.
1軽率 is not a noun that can be 'caused' (引き起こす). You would say 軽率な行動, but 軽率 itself is not a standalone noun meaning 'carelessness' in this way.
3軽率する is not valid. 軽率 is a na-adjective, not a suru-verb. You would say 軽率な行動をする or むやみにする.
4The correct form is 軽率な行動, not 軽率の行動. As a na-adjective modifying a noun, it must use な, not の.
軽率 — rash, thoughtless, careless (na-adjective)
4.露骨
1新しいめがねにしたら露骨に見えるようになった。
2開始時間は露骨に知らせておきました。
3昔のことはあまり露骨に覚えていない。
4露骨にいやな顔をしてはいけない。
Show answer
Answer: 4. 露骨にいやな顔をしてはいけない。
露骨(ろこつ)is a na-adjective meaning 'blatant, flagrant, overt, undisguised.' In option 4, 露骨に modifies いやな顔をする: 'You shouldn't make a blatantly unpleasant face.' This is a natural and correct usage — 露骨にいやな顔 is a common collocation.
1露骨に見えるようになった doesn't make sense. 露骨 describes behavior or expressions that are blatantly obvious, not how clearly one sees through glasses. The intended word might be はっきりと.
2露骨に知らせる is unnatural. You would say はっきりと知らせる or 徹底的に知らせる. 露骨 implies something shamelessly overt, typically about negative attitudes or expressions, not about notifying people of a start time.
3露骨に覚えていない is incorrect. 露骨 doesn't mean 'clearly' in the sense of memory clarity. You would use はっきりと here.
露骨 — blatant, flagrant, overt, undisguised (na-adjective, often used for negative expressions/attitudes)
5.おごる
1この本は私が父におごったものです。
2今日は私がおごるからどんどん注文して。
3手作りの料理をおごっていただいて恐縮です。
4入学祝いに気持ちばかりのプレゼントをおごった。
Show answer
Answer: 2. 今日は私がおごるからどんどん注文して。
おごる means 'to treat someone (to food or drink), to stand someone a meal.' Option 2 says 'Today I'm treating, so order as much as you want,' which is the textbook usage — offering to pay for someone's food/drinks.
1おごる is specifically for treating someone to food or drink, not for giving a book. You would use 買ってあげた or 贈呈した for a book.
3おごっていただく is unnatural. When you receive a meal from someone, you say ごちそうになる or ごちそうさまをする. Also, おごる is something the giver does; the recipient would use ごちそうになる.
4おごる is for food/drink, not for gifts. A gift would be 贈る(おくる)or あげる. This option is a deliberate near-homophone trap (おごる vs. おくる).
おごる — to treat someone (to food/drink), to stand someone a meal/drinks
6.一括
1一括して50人集まった。
2今日は家内と一括して買い物に行くつもりです。
3グラスのビールを一括して飲んだ。
4各々が行ってきた業務を一括して処理することにした。
Show answer
Answer: 4. 各々が行ってきた業務を一括して処理することにした。
一括(いっかつ)means 'to lump together, to handle/process multiple things as one batch.' Option 4 says 'We decided to process the work each person had been doing all together (as a batch),' which is the correct usage. 一括して処理する is a standard collocation meaning to consolidate and process items collectively.
1一括して集まった is unnatural. 一括 means processing multiple items as a group, not 'all at once' in the sense of people gathering simultaneously. The correct word here would be 一斉に(いっせいに, simultaneously).
2Going shopping with one's wife should be 一緒に(いっしょに, together), not 一括して. 一括 implies batching multiple items/tasks, not two people doing something together.
3Drinking a glass of beer in one go would be 一気に(いっきに, in one gulp), not 一括して. 一括 is about consolidating separate items, not about doing a single action quickly.
一括 — to lump together, to batch, to handle multiple things as one
7.かんぺき
1あの俳優のかんぺきな演技には驚いた。
2彼はいつも任務をかんべきします。
3この薬の取りあつかいにはかんぺき気をつけること。
4この書類はかんぺき的でどこにも間違いがありません。
Show answer
Answer: 1. あの俳優のかんぺきな演技には驚いた。
完璧(かんぺき)is a na-adjective meaning 'perfect, flawless.' Option 1 says 'I was surprised by that actor's perfect acting,' using 完璧な correctly as a modifier before the noun 演技(えんぎ, acting).
2完璧 is a na-adjective, not a verb. かんべきします is grammatically impossible; you cannot conjugate it as a suru-verb. The intended meaning ('he always completes his missions perfectly') would use 完璧にこなす or similar.
3かんぺき気をつける is ungrammatical. 完璧 cannot attach to 気をつける this way. The correct expression would be 十分に(じゅうぶんに, sufficiently/fully)気をつける.
4完璧的 is not a valid form. 完璧 is already a na-adjective meaning 'perfect,' so adding 的(てき)is redundant and ungrammatical. The sentence should simply use 完璧で.
完璧 — perfect, flawless (na-adjective)
8.ののしる
1会社で大きなミスをしてしまい、大声でののしられた。
2子どもが悪いことをしたらののしることが大切な教育です。
3立ち入り禁止の所に入ろうとしている人をそっとののしった。
4友人に頼まれて英語の手紙をののしってあげた。
Show answer
Answer: 1. 会社で大きなミスをしてしまい、大声でののしられた。
罵る(ののしる)means 'to verbally abuse, to insult, to swear at someone.' Option 1 says 'I made a big mistake at work and was sworn at loudly (大声でののしられた),' which is a natural and correct usage in passive form.
2Scolding a child for bad behavior should use 叱る(しかる, to scold/reprimand constructively), not 罵る. 罵る means harsh verbal abuse/insulting, which is not appropriate as 'important education.'
3そっと means 'quietly, gently, softly,' which contradicts 罵る (loud verbal abuse). You cannot quietly insult someone in the way 罵る implies. Also, warning someone about a restricted area would use 注意する(ちゅういする)or 止める.
4Writing a letter for a friend should use 書く(かく, to write). ののしってあげた ('swore at (the letter) for them') makes no sense — 罵る targets a person, not an object like a letter.
罵る — to verbally abuse, to insult, to swear at
9.ボイコット
1明日は忙しいので、健康診断はボイコットすることにした。
2学生は教師に不満を持って、授業をボイコットしたそうだ。
3風邪をひいて会社をボイコットした。
4天気がよかったので、午後の会議をボイコットした。
Show answer
Answer: 2. 学生は教師に不満を持って、授業をボイコットしたそうだ。
ボイコット means 'to boycott' — to refuse to participate in or attend something as a form of protest or expression of dissatisfaction. Option 2 says 'The students were dissatisfied with the teacher and boycotted classes,' which correctly captures the protest/dissatisfaction motivation essential to a boycott.
1Skipping a health checkup because you are busy is simply 取りやめる(とりやめる, to cancel)or 受けない(うけない, to not take it). There is no protest or collective action involved, so ボイコット is inappropriate.
3Missing work due to a cold is 休む(やすむ, to take a day off). Illness is not a protest action, so ボイコット is wrong.
4Skipping a meeting because the weather is nice is simply 欠席する(けっせきする, to be absent)or 出ない. Good weather is not a reason for a boycott, which requires protest motivation.
ボイコット(ぼいこっと) — to boycott — to refuse to participate as a form of protest
10.いやに
1いいカメラだけど、高いからいやに買いたくない。
2毎日勉強したので、いやに成績が上がって嬉しい。
3最近いやに元気がないね。悩みでもあるの?
4いやにだんだんあたたかくなって、過ごしやすくなりました。
Show answer
Answer: 3. 最近いやに元気がないね。悩みでもあるの?
いやに means 'excessively, abnormally, unusually' — expressing that something is noticeably more than expected, often with a slightly negative or concerning nuance. Option 3 says 'Lately you've been unusually low on energy. Do you have some worry?' いやに元気がない ('unusually lacking energy') is a perfect collocation, expressing concern that the person's low energy is abnormal.
1いやに買いたくない is ungrammatical/unnatural. いやに modifies adjectives/adjective-like phrases to mean 'excessively ~,' but here the sentence structure doesn't work. The intended meaning ('I don't want to buy it because it's expensive') would simply use 高すぎて or だから.
2いやに成績が上がって嬉しい is contradictory. いやに carries a negative/concerning nuance ('abnormally, excessively'), which clashes with 嬉しい (happy). Good grades from studying hard should be described with おかげで or ちゃんと, not いやに.
4いやにだんだん is redundant and unnatural. だんだん(gradually)already describes a gradual change, and いやに ('excessively') does not pair with it. The sentence would simply use だんだん暖かくなって without いやに.
いやに — excessively, abnormally, unusually (with a slightly negative/concerning nuance)
Explanations are AI-generated and are sometimes not accurate. Spotted a mistake in a question or answer? Write to us at hello@practicejlpt.com and we’ll fix it.