题目内容
【题目】填空。
1. He is standing ______ a chair.
2. He is cleaning ______ window.
3. Sally is ______ (clean) the window.
4. It _____ (be) Friday.
5. Let’s _____ (clean) our classroom.
【答案】1. on 2. the 3. cleaning 4. is 5. clean
【解析】
略
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