Find the mistake: We have prepared for the dinner since a quarter of an hour.

Câu hỏi :

Find the mistake: We have prepared for the dinner since a quarter of an hour.

A. have

B. for

C. since

D. an hour

* Đáp án

C

* Hướng dẫn giải

Trong thì HTHT, for + khoảng thời gian

since => for

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