题目内容
The policeman asked the child ________ crass the street ________ the traffic lights turned green.
[ ]
A.not; when B.don't; before C.not to; until
答案:C
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题目内容
The policeman asked the child ________ crass the street ________ the traffic lights turned green.
[ ]
A.not; when B.don't; before C.not to; until