Mr. Nixon refused to answer the questions on the_________that the matter was confidential

Câu hỏi :

Mr. Nixon refused to answer the questions on the_________that the matter was confidential .

A. Reasons   

B. excuses   

C. grounds 

D. foundations.

* Đáp án

C

* Hướng dẫn giải

Đáp án C

On the grounds that + clause: bởi vì ...

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