—How do you spend your spare time? —I volunteer it to ____ sick kids in the

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—How do you spend your spare time?
—I volunteer it to ____ sick kids in the hospital.   [     ]
A. stand up
B. come up
C. put up
D. cheer up

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举一反三

The dentist didn"t _____ until it was nine o"clock.      [     ]
A. show to
B. show off
C. show around
D. show up

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Our neighbor"s car alarm is always _____ in the middle of the night.      [     ]
A. going out
B. going off
C. going away
D. going down

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I went to meet Hank, but he never _____.      [     ]
A. rushed off
B. showed up
C. gave out
D. set up

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Those mountains         young trees in a few years.     [     ]
A. will be covered with
B. will be discovered with
C. are covered with
D. are discovered with

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It"s our duty to          trees and flowers.      [     ]
A. watering
B. look for
C. take care
D. look after

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