12. --- Can you guess if they _____________to play basketball with us?

问题描述:

12. --- Can you guess if they _____________to play basketball with us?
--- I think they'll come if they _______________tree.
A. come; are B. will come; will be
C. will come; are D. come; will be
详细解释一下谢谢诸位大师啊

答案选C. will come; are
第一个if 指是否,动词应该还是随时态用将来时will come
第二个if是引导条件状语从句,所以动词用一般现在时,所以用“are".