We meant to finish the work by dark, but we were so tired that we could not ______.
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A
hold on
B
last on
C
carry on
D
keep to
推荐题目
After a long time’s hard work, he _________ Qinghua University last year.
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A
was admitted
B
was admitted into
C
admitted into
D
admits into
People in Tibet are ________ than they used to be.       
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A
better off
B
worse off
C
well off
D
badly off
 While crossing the street, please ________ for the coming cars.
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A
watch out
B
take care
C
watch over
D
be careful