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Gap (16.1):

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This question belongs to "Thì quá khứ tiếp diễn – Past Continuous" on Học Mỗi Ngày. Review the answer, solution, and related items in the same set to study more effectively.

Question detail

Gap (16.1):

A

were you doing

B

did you do

C

was you doing

D

were you do

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