A cure for the common cold, causing by a virus, has not been found.    

Câu hỏi :

A cure for the common cold, causing by a virus, has not been found.    

A causing                 

B for                         

C a virus      

D has not 

* Đáp án

A

* Hướng dẫn giải

Phương pháp giải:

Copyright © 2021 HOCTAP247