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Tim___at the factory long when he was made a supervisor.

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This question belongs to "Phiếu bài tập Unit 3- Tiếng Anh 6 Global Success" on Học Mỗi Ngày. Review the answer, solution, and related items in the same set to study more effectively.

Question detail

Tim___at the factory long when he was made a supervisor.

A

hadn't been working

B

wasn't working

C

didn't work

D

wasn't worked

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