问题
选择题
-It's 10 o'clock. I must go now.
-It's raining outside. Don't leave __________ it stops.[ ]
A. when
B. since
C. while
D. until
答案
答案：D
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-It's 10 o'clock. I must go now.
-It's raining outside. Don't leave __________ it stops.[ ]
A. when
B. since
C. while
D. until
答案：D