题目内容

—I’m sorry, but smoking is not allowed here. —Sorry, I ____ that. I’ll put it out right now.

A. didn’t know
B. don’t know
C. haven’t know
D. wouldn’t know

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—Has Mary finished her book review on Gone with the wind？ — I’m not sure.She _____on it last week.

A. has worked
B. was working
C. had worked
D. would work

Many People hold the____ that it is hard to push ahead with this unpopular policy.

A. Heart
B. mind
C. subject
D. view

____ you really need it, it is better not to use free Wi-Fi.

A. Because
B. Since
C. Unless
D. When

—How did you survive the fire？ —The firefighters ____my screams, as I felt myself being pulled out of the house.

A. could have heard
B. might have heard
C. must have heard
D. should have heard