The new traffic system in the city, ____resevers one lane foe cars with more than one one person in, has reduced congestion considerably.

Câu hỏi :

The new traffic system in the city, ____resevers one lane foe cars with more than one one person in, has reduced congestion considerably.

A which

B why 

C where

D that

* Đáp án

A

* Hướng dẫn giải

Phương pháp giải:

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