__Do you know if he __ to play basketball with us?__I think he will come if he __ free tomorrow.A comes,is B comes,will be C will come,is D will come,will be

__Do you know if he __ to play basketball with us?__I think he will come if he __ free tomorrow.A comes,is B comes,will be C will come,is D will come,will be
__Do you know if he __ to play basketball with us?__I think he will come if he __ free tomorrow.A comes,is B comes,will be C will come,is D will come,will be

__Do you know if he __ to play basketball with us?__I think he will come if he __ free tomorrow.A comes,is B comes,will be C will come,is D will come,will be
choose C
前面用will come表示将来
后面用is是用一般现在时表将来,是一种虚拟语气!

C
第一个句子的IF的宾语从句
第二个句子是条件状语从句

C
第一个是宾语从句,第二个是条件状语从句

c