题目内容
A: Hey, man. You can’t cross the street now. You have to wait _____ the traffic lights turn green.
B: Oh, sorry and thank you.
A. when B. after C. until D. while
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题目内容
A: Hey, man. You can’t cross the street now. You have to wait _____ the traffic lights turn green.
B: Oh, sorry and thank you.
A. when B. after C. until D. while