正确：C
if表示“是否”时,从句时态必须据实际进行选择,第一个句中的if是是否的含义,从句体现将来时,故填will come; if 表示“如果”时,常套用“主将从现”,即主句使用一般将来时,从句使用一般现在时,故从句填is.
Do you know if he ____to play basketball with me ? ---I think he will come if he ___free tomorrow.
Do you know if he ____to play basketball with me ? ---I think he will come if he ___free tomorrow.
Acomes,isB comes;willbe Cwillcome,is Dwillcome, willbe
Acomes,isB comes;willbe Cwillcome,is Dwillcome, willbe
英语人气：938 ℃时间：2019-08-18 10:19:50
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