问题
选择题
— Look! Here comes a bus.
— No hurry, Jack. Don't get on it _____ it has stopped. [ ]
A. after
B. when
C. until
答案
答案：C
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— Look! Here comes a bus.
— No hurry, Jack. Don't get on it _____ it has stopped. [ ]
A. after
B. when
C. until
答案：C