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We’ll have a picnic if it ______rain tomorrow.
A. don’t B. doesn’t C. won’t D. isn’t
If it ________ rain tomorrow, we'll have a picnic. But I don't know if it ________ tomorrow.
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I don’t know if it ______ tomorrow. If it ______, we’ll have a picnic.
A. rains; rains B. will rain; will rain C. rain, doesn’t rain D. will rain; doesn’t rain