问题描述：
—mum,will you take me to the park tomorrow?
—If it____rainy.A won‘t B doesn't C isn’t D won't be
提问：为什么选C而不选B,理由,
—If it____rainy.A won‘t B doesn't C isn’t D won't be
提问：为什么选C而不选B,理由,
问题解答：
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