Can you guess if they to play basketball with us ? I think they’ll come if they free .A.

问题补充：

Can you guess if they to play basketball with us ? I think they’ll come if they free .

A. come, are

B. will come , will be

C. will come , are

D. come , will be

答案：

A. come, are

B. will come , will be

(答案→)C. will come , are

D. come , will be

解析：句意：你能猜出他们是否会和我们打篮球吗？我认为如果他们有空他们回来。结合语境可知前文宾语从句描述的是将来发生的动作，故用一般将来时态。当主句为将来时态时，条件从句中一般用一般现在时态表示将来的动作，故下文用一般现在时态。选C。