题目内容
-What about going to the South Lake for a picnic next weekend?
-OK.But I'm not sure ________ it will rain.
[ ]
A.why
B.where
C.when
D.whether
答案:D
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题目内容
-What about going to the South Lake for a picnic next weekend?
-OK.But I'm not sure ________ it will rain.
A.why
B.where
C.when
D.whether