The foreign student advisor recommended that she studied more English before enrolling at the university

Câu hỏi :

Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction.

A. foreign 

B. studied

C. enrolling

D. the

* Đáp án

* Hướng dẫn giải

Đáp án B

Cấu trúc: QKHT+ before+ QKĐ/V_ing: một việc diễn ra trước một việc khác.

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