MODULE 19- Đại từ nhân xưng, Đại từ sở hữu và Đại từ phản thân
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________ for us? A. How has she been waiting long B. Has she been waiting how long C. How long has she been waiting D. How long she has been waiting

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_______ for us?

How has she been waiting long

Has she been waiting how long

How long has she been waiting

How long she has been waiting

Giải thích

Chọn đáp án C