............... for the fact that he was working abroad, he would willingly have helped with the project.

Câu hỏi :

............... for the fact that he was working abroad, he would willingly have helped with the project.

A If it had been

B If it had not been

C Had it been

D Hadn’t it been

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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