改错：If they don't finish their homework,they work till finish it.
A.改 don't
B.改 their
C.改后一句的work
D.改后一句的finish
_____
人气：427 ℃ 时间：2019-08-19 21:54:57
解答
选C~
If they don't finish their homework,they will work till finish it.
IF 引导的从句,条件句是一般现在时态,主句就应该是将来时态~
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