John’s wisdom teeth were troubling him, so he went to a dental surgeon to see   about having them pull.

Câu hỏi :

John’s wisdom teeth were troubling him, so he went to a dental surgeon to see   about having them pull.

A were troubling

B to see

C about

D them pull

* Đáp án

D

* Hướng dẫn giải

Phương pháp giải:

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