While __________ to help Tom with his math, I got impatient because he wouldn’t pay attention to what I was saying.

Câu hỏi :

While __________ to help Tom with his math, I got impatient because he wouldn’t pay attention to what I was saying.

A I am trying

B trying

C I try

D having tried

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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