I"m really busy _____ our homework. [ ]A. with B. in C. on D. at

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I"m really busy _____ our homework. [     ]
A. with
B. in
C. on
D. at

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举一反三

The boy likes to play ______ his friends. [     ]
A. and
B. at
C. with
D. for

题型：同步题难度：| 查看答案

Do you often help your mother_____ housework at weekends?[ ]
A. with
B. in
C. on
D. by

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Our PE lessons are_____ Friday afternoon.         [     ]
A. in
B. on
C. of
D. at

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Do you know how to chat(聊天)_____ the Internet?[ ]
A. in
B. on
C. with
D. before

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—Who are you talking _____?
—Mrs. Sun. She is very ill.[ ]
A. to
B. with
C. about
D. in

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