We believe scientists will _____ a way to solve the problem of airpollution. [

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We believe scientists will _____ a way to solve the problem of airpollution. [ ]
A. set off
B. put off
C. come up with
D. catch up with

答案

举一反三

—Mind your steps, guy! Don"t you see the words "_____ the grass"?
—Oh, I am sorry. [ ]
A. Keep off
B. Keep out
C. Take off
D. Take out

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—Hi, Sam. I didn"t see you last night.
—Oh. We _____ my uncle"s home after supper.[ ]
A. dropped by
B. showed up
C. hung out
D. gave in

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—Excuse me. When does Flight CZ3391 take off?
—One moment, please. I"ll _____ it _____. [ ]
A. look; up
B. take; away
C. give; back
D. turn; down

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—Have you made up your mind _____ the sick kids?
—By singing songs. [ ]
A. what to tell
B. how to cheer up
C. when to help
D. where to look after

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Xiao Li said she would rather _____ join us.

[ ]

A. did not
B. to not
C. not
D. not to

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