问题
选择题
— When shall we go to have a picnic?
— Not________the weather begins to pick up. [ ]
A. since
B. until
C. unless
D. while
答案
答案：B
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— When shall we go to have a picnic?
— Not________the weather begins to pick up. [ ]
A. since
B. until
C. unless
D. while
答案：B