He worked hard ________ a mechanic for ten years before being appointed manager.

Câu hỏi :

He worked hard ________ a mechanic for ten years before being appointed manager.

A. as

B. at

C. with

D. by

* Đáp án

A

* Hướng dẫn giải

Chọn A

work as + job: làm việc như

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