问题 填空题
根据图片完成句子。
1. — Where does the _____________  come from?
    — It comes from the _____________ .
2. — Where does the _____________  come from?
    — It comes from the _____________ .
3. — Where does the _____________  come from?
    — It comes from the _____________ .
4. — Where does the _____________  come from?
    — It comes from the _____________ .
5. — Where does the _____________  come from?
    — It comes from the _____________ .
答案

1. rain; cloud  2. desk; tree  3. bread; flour  4. flour; wheat  5. cloud; vapour

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单项选择题