正确：C
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,第二句句中的if表示“如果”的含义,即从句使用一般现在时.第一句中的if表示“是否”,从句需根据实际选用时态.
12.Do you know if we will go for a picnic this Saturday?I think we will if we __any classes.
12.Do you know if we will go for a picnic this Saturday?I think we will if we __any classes.
A.won't have B.did't have C.don't have D.aren't having
A.won't have B.did't have C.don't have D.aren't having
英语人气：648 ℃时间：2020-01-31 13:46:19
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