问题
单项选择题
We will put off the picnic in the park until next week,（）the weather may be better.
A. that
B. where
C. which
D. when
答案
参考答案：D
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We will put off the picnic in the park until next week,（）the weather may be better.
A. that
B. where
C. which
D. when
参考答案：D