初中英语被动语态单选题

A: Listen! Is it Linda singing in the next room?
B: No, it __________ be her. She is still in Shanghai.

A．can’t

B．couldn’t

C．may not

D．might not

--I have a fever. –Oh, you should ____.
A. take a walk    B. see a dentist   C. drink more water

Zhengzhou will be more and more convenient when Zhengzhou Subway_____ in two years.

A．is completed

B．will be completed

C．will complete

D．has completed