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We should play a part in ______ the earth.
#46449
A
Save
B
to save
C
saving
D
saved
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—Why did Tom look unhappy yesterday?—Because all his classmates passed the test        him.
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with
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The food       my country is quite different       that here.
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in; like
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#48241
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The engineer will return from Macao ____ a few days.    
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#50082
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use
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