题目内容
We are going for a picnic tomorrow. I'll call Wendy to make sure ________.
[ ]
A. why to start
B. when to start
C. what to start
D. which to start
B. when to start
C. what to start
D. which to start
B
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请根据句意从方框中选用合适的单词,并用其适当形式填空,使句子通顺。
they ninety little invent usual |
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