By the end of the 21st century, scientists _____  a cure for the common cold.

Câu hỏi :

By the end of the 21st century, scientists _____  a cure for the common cold.

A will find        

B  will have found     

C will be finding           

D will have been finding

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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