An ambitious person (A) is committed to (B) improve his or her (C) status (D) at work

Câu hỏi :

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

A. is

B. improve

C. status

D. at

* Đáp án

* Hướng dẫn giải

Đáp án : B

tobe committed to Ving: dốc tâm làm gì. improve -> improving

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