1. Listen! The phone ________ . Please go to answer it.
A. rings
B. is ringing
C. rang
D. will ring
2. Tom took a taxi to the airport, only ________ his plane high up in the sky.
A. finding
B. to find
C. being found
D. to have found
3. My wallet is nowhere to be found. I ________ when I was on the bus.
A. must have dropped it
B. must drop it
C. should have dropped it
D. ought to have dropped it
4. — How is Nancy getting on with her lessons?
— She won’t catch up with others ________ she studies harder.
A. after
B. unless
C. as soon as
D. but
5. When college students ________ future employment, they often think of status, income, and prestige.
A. demand
B. assume
C. apply
D. anticipate
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