题目内容
() 4. —Jim,come out!Let's go to play football.
—Sorry.I’m working a math problem。
A. out B. on
C. for D. with
4.B
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题目内容
() 4. —Jim,come out!Let's go to play football.
—Sorry.I’m working a math problem。
A. out B. on
C. for D. with