Q1.

The new manager ___ very friendly to all employees.
A. is
B. are
C. be
D. been

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Q2.

Please ___ your seat belt while the bus is moving.
A. fasten
B. fastens
C. fastening
D. fastened

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Q3.

The report will be ready ___ Friday morning.
A. at
B. on
C. in
D. by

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Q4.

Mr. Lewis will arrive at 3 p.m., ___ he might be a little late.
A. so
B. but
C. because
D. if

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Q5.

Employees must submit the form ___ the end of the week.
A. until
B. by
C. during
D. among

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Q6.

The meeting was canceled ___ the heavy rain.
A. because
B. because of
C. although
D. despite

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Q7.

Our company plans to hire more staff to handle the ___ number of orders.
A. increase
B. increases
C. increasing
D. increasingly

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Q8.

Customers can contact us by phone or e-mail if they have ___ questions.
A. some
B. any
C. few
D. much

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Q9.

The CEO asked the team to finish the project as ___ as possible.
A. quick
B. quicker
C. quickly
D. quickest

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Q10.

The new product design was created ___ our engineering team.
A. by
B. at
C. of
D. from

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✅ 【解答】

1 → A
2 → A
3 → D
4 → B
5 → B
6 → B
7 → C
8 → B
9 → C
10 → A

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📚 【詳しい解説（目標スコアつき）】

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Q1（目標：500点）

主語 manager は単数 → be動詞は is → A。

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Q2（目標：550点）

動詞の原形を置く命令文 → fasten → A。

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Q3（目標：600点）

“〜までに”は by。締め切り表現 → D。

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Q4（目標：600点）

“来る予定だが、遅れるかもしれない” → 逆接の but → B。

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Q5（目標：600点）

“by the end of”＝「〜までに」→ 締め切りを表す → B。

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Q6（目標：650点）

“because of + 名詞” → “heavy rain” は名詞 → because of → B。

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Q7（目標：700点）

状況を説明する形容詞的用法 → “increasing number” → C。

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Q8（目標：600点）

疑問・否定・if節は any を使う → B。

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Q9（目標：650点）

“as ___ as possible” は副詞 → quickly → C。

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Q10（目標：500点）

受動の行為者（〜によって） → by → A。