---Is Jack on duty today?
----It _______ be him. It’s his turn tomorrow.
A. mustn’t B. won’t C. can’t D. needn’t
In science fictions, aliens are _________(生物) from the outer world.
Between the two roads ____ a TV tower called "Skyscraper Tower".
A. stands B. standing C. which stands D. stand
Smoking your health．
A．does harm to B．do harm to C．is harmful D．do good to
Over the past 20 years, the Internet helped change our world in _____way or another for the better. A. any B. one C. every D. either
Considering his health, his coach him retiring ahead of time.
A．suggests B．advises C．insists D．requires
—Sorry, do you mind if I smoke here?
—Yes, __________. .
A you could B go ahead C I do D my pleasure
The 18-storeyed building, when _____, will shut out the sun _____ up the rooms in my house.
A. completed; lighted B. completing; lighting C. completing; lighted D. completed; lighting
---- It is high time I _______ to school.I have to go now
---- See you!
A.had gone B.went C.would go D.should have gone
Most of the audience wondered what ider a man who’s deaf from birth can have ____ music.
A、with B、in C、of D、at