Don"t laugh _____ others. You should help them when they are in trouble. [

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Don"t laugh _____ others. You should help them when they are in trouble. [ ]
A. at
B. to
C. of

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举一反三

- What music do you like?
- I like music that I can sing along or dance .[ ]
A. to; with
B. with; with
C. to; to
D. with; to

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I don"t think one can keep healthy _____ taking enough exercise. [ ]
A. with
B. without
C. for
D. to

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_______ visitors come to China every year .[     ]
A. Thousands of
B. Ten thousands
C. Ten thousand of
D. Thousand of

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It"s so dark that we can"t go _____ the forest .[     ]
A. through
B. across
C. cross
D. crossing

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We should return the books to the library _____ time .      [     ]
A. about
B. on
C. by
D. for

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