I study English_______working with a group. [ ]A. in B. on C. at

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I study English_______working with a group.     [     ]
A. in
B. on
C. at
D. by

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举一反三

You can help your mother_______the housework.  [     ]
A. with
B. by
C. in
D. on

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Heilongjiang is           the northeast of China,  and              north of Jilin.                  [     ]
A. in; on
B. on; to
C. in; to
D. on; to

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He would like to trek               the jungle,  because he likes exciting  vacations.             [     ]
A. through
B. across
C. cross
D. over

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Did you know the answer _____ the question?     [     ]
A. to
B. of
C. for
D. at

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I often dream _     _ my mother.  I miss her very much.      [     ]
A. of
B. for
C. in
D. at

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