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选择合适的词填入空白处Aftretheclass,theyknow()whenthereisafire.A.todowhatB.whatdoC.whattodoD.dowhat

题目详情
选择合适的词填入空白处
Aftre the class,they know( ) when there is a fire.
A.to do what
B.what do
C.what to do
D.do what
▼优质解答
答案和解析
C