The number of learners _________ not large; therefore, a number of headphones ______ available to them in the lab.

Câu hỏi :

The number of learners _________ not large; therefore, a number of headphones ______ available to them in the lab.

A are – is                

B is – are                     

C are – are                       

D is – is

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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