— Do you know ________ this afternoon?
— I'm not sure, but I'll tell you as soon as she ________.
A. how will Betty arrive; starts
B. how Betty will arrive; will start
C. what time will Betty arrive; will start
D. what time Betty will arrive; starts
If there is ______ pollution, the air in our city will be ________ dirtier.
A.less; more B.more; much
C.less; less D.more; more
By the time I locked the door, I realized I ________my keys at home.
A. had repaired B. had changed
C. had forgotten D. had left
—________ English movies is helpful to learn English.
—But I find _______ hard to understand when the people speak fast.
A. Watching, that B. Watch, it’s
C. Watching, it D. Watching, its
—_____I finish my homework now?
—No, you_____. Your work is over today.
A. Can't; must B. Must; don't have to
C. May; couldn't D. Couldn't; could
Peter likes pop music, but ______ his father ______ his mother likes it.
A. both; and B. not only; but also
C. neither; nor D. either; or
