Tim asked Sarah English so far how long she had been learning

Câu hỏi :

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

A. how long was she learning

B. how long she has been learning

C. she had been learning how long

D. how long she had been learning

* Đáp án

D

* Hướng dẫn giải

Đáp án D

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