问题
选择题
Let’s put off the picnic until next week, _____ the weather may be better.
A．then
B．if
C．as
D．when
答案
答案：D
when引导的是定语从句，修饰先行词next week。
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Let’s put off the picnic until next week, _____ the weather may be better.
A．then
B．if
C．as
D．when
答案：D
when引导的是定语从句，修饰先行词next week。