Câu hỏi :

_________, I recognized him.

A. Whenever he takes off his dark glasses

B. As soon as  he took off his dark glasses

C. Then he took off his dark glasses

D. While he took off his dark glasses

* Đáp án

B

* Hướng dẫn giải

Đáp án B  As soon as + S + V(qk) + st , S + V(qk) +st

Kiến thức mệnh đề trạng ngữ thời gian

Whatever + S + V( hiện tại) +St, S + V (tương lai ) + St

Then S + V(qk) + st: diễn tả hành động xảy ra sau

While + S + to be + Ving

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