Câu hỏi :

The supermarket had closed ______.

A. before Sandra came to buy some sugar

B. when Sandra was coming buy some sugar

C. as soon as Sandra will come to buy some sugar

D. so that Sandra came to buy some sugar

* Đáp án

A

* Hướng dẫn giải

Dịch: Siêu thị đã đóng cửa trước khi Sandra đến mua một ít đường.

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