( ) -Jim, come out. Let's go to play football. -Sorry. I'm a math problem. A. working out B. working on C. working for D. working with 查看更多

 

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----Jim, come out. Let's go to play football. 

 ----Sorry. I'm_    a math problem.

A. working out  B. working on  C. working for  D. working with

 

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----Jim, come out. Let's go to play football.

----Sorry. I'm_  a math problem.

A. working out B. working on C. working for D. working with

查看答案和解析>>


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