Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.

Câu hỏi

Mary will attend a workshop on gender equality _______ .

A. when she returns from her business trip

B. after she had returned from her business trip

C. before she returned from her business trip

D. once she returned from her business trip

Đáp án
A. when she returns from her business trip

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