❓ Questions（10 Questions）
Q1.
The IT team will complete the system upgrade ______ Friday evening.
A. at
B. by
C. during
D. until
Q2.
Ms. Lopez is responsible for ______ monthly sales reports.
A. prepare
B. prepared
C. preparing
D. preparation
Q3.
The contract will remain valid ______ both parties agree to terminate it.
A. unless
B. because
C. although
D. if
Q4.
Customer feedback is extremely ______ for improving our services.
A. value
B. valued
C. valuable
D. valuably
Q5.
The training session was postponed ______ the instructor’s illness.
A. because
B. although
C. due to
D. despite
Q6.
Each employee ______ required to submit an expense report by the end of the month.
A. are
B. were
C. is
D. be
Q7.
Please make sure that all documents are ______ before submission.
A. complete
B. completely
C. completion
D. completed
Q8.
The new policy was implemented more smoothly ______ expected.
A. as
B. than
C. from
D. with
Q9.
The manager apologized ______ the delay in responding to the inquiry.
A. for
B. to
C. about
D. with
Q10.
The company plans to expand its operations ______ Asia next year.
A. on
B. at
C. to
D. into
✅ Answers & 詳しい解説（目安スコアつき）
Q1 → B（by）
🎯 目安スコア：550点
👉 by = 期限（〜までに）。until は継続。
Q2 → C（preparing）
🎯 目安スコア：600点
👉 be responsible for + 動名詞。
Q3 → A（unless）
🎯 目安スコア：650点
👉 unless = if … not（〜でない限り）。
Q4 → C（valuable）
🎯 目安スコア：500点
👉 be + 形容詞。value（名詞）は不可。
Q5 → C（due to）
🎯 目安スコア：550点
👉 due to + 名詞。because は接続詞。
Q6 → C（is）
🎯 目安スコア：650点
👉 each + 単数動詞。
Q7 → D（completed）
🎯 目安スコア：600点
👉 be + 過去分詞＝「完了している状態」。
Q8 → B（than）
🎯 目安スコア：500点
👉 比較級 + than。
Q9 → A（for）
🎯 目安スコア：550点
👉 apologize for + 名詞 / 動名詞。
Q10 → D（into）
🎯 目安スコア：600点
👉 expand into + 地域／分野。
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