The police asked the children ______cross the street ______the traffic lights tu

游客2024-09-11  8

问题 The police asked the children ______cross the street ______the traffic lights turned green.

选项 A、not; before
B、don’t; when
C、not to; until
D、not to; after

答案 C

解析 考查时间状语引导词和固定短语ask sb.to do sth.的否定形式。ask sb.to do sth.的否定形式为ask sb.not to do sth.,由此可排除A、B。四个选项中before,when,until和after均可以引导时间状语从句,但D中after用在此处意为“绿灯亮了后不要过马路”,不符合生活常识。C中until与not连用,表示“直到……才……”,为正确答案。
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