Q1.
The marketing report must be submitted ______ the end of this week.
A. by
B. until
C. during
D. from
Q2.
Ms. Lee is responsible for ______ the final approval of the contract.
A. give
B. giving
C. gave
D. given
Q3.
The seminar was postponed ______ several key speakers were unavailable.
A. although
B. because
C. despite
D. unless
Q4.
All employees are required to follow the company’s ______ guidelines.
A. safely
B. safety
C. safe
D. safer
Q5.
The new software update will allow users to work more ______.
A. efficient
B. efficiency
C. efficiently
D. efficienty
Q6.
Please review the attached document carefully before ______ it to the client.
A. send
B. sent
C. sending
D. to send
Q7.
The conference room is available ______ reservation only.
A. with
B. for
C. on
D. by
Q8.
Mr. Brown has worked for this company ______ more than ten years.
A. since
B. during
C. for
D. from
Q9.
The manager asked the team to finish the task as ______ as possible.
A. quick
B. quicker
C. quickly
D. quickest
Q10.
Customers who register online will receive ______ confirmation email.
A. a
B. an
C. the
D. no article
✅ Answers & 詳しい解説（目安スコアつき）
Q1 → A（by）
🎯 目安スコア：500点
👉 by + 期限
「今週末までに」＝ by the end of this week
Q2 → B（giving）
🎯 目安スコア：600点
👉 be responsible for + 動名詞
for の後は ing 形。
Q3 → B（because）
🎯 目安スコア：550点
👉 because + 主語＋動詞
理由を説明している。
Q4 → B（safety）
🎯 目安スコア：500点
👉 guidelines（名詞）を修飾 → 名詞 + 名詞
safety guidelines は定番コロケーション。
Q5 → C（efficiently）
🎯 目安スコア：600点
👉 work を修飾 → 副詞が必要。
Q6 → C（sending）
🎯 目安スコア：650点
👉 before + 動名詞
TOEIC 超頻出。
Q7 → D（by）
🎯 目安スコア：550点
👉 by reservation only
「予約制でのみ」＝決まり表現。
Q8 → C（for）
🎯 目安スコア：500点
👉 for + 期間
since は起点が必要。
Q9 → C（quickly）
🎯 目安スコア：600点
👉 as + 副詞 + as possible
比較構文の定番。
Q10 → B（an）
🎯 目安スコア：550点
👉 confirmation は母音発音（kən-）
an confirmation email
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