--- Can you guess if they to play basketball with us?--- I think they'll come if they fr

问题补充：

--- Can you guess if they to play basketball with us?

--- I think theyll come if they free.

A. will come, will be

B. will come, are

C. come, are

D. come, will be

答案：

A. will come, will be

(答案→)B. will come, are

C. come, are

D. come, will be

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