Psychologists have found that the number of social contacts we have__ only reason for loneliness

Câu hỏi :

Psychologists have found that the number of social contacts we have__ only reason for loneliness

A are not the  

B is not the 

C are not an      

D is not an

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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