1. There are five boats in the river. (对划线部分提问)
______________ ______________ boats ______________ ______________ in the river?
2. It's three thirty now. (对划线部分提问)
 ______________ ______________ ______________ now?
3. This is a bus. (改为复数句子)
______________ are ______________.
4. Jenny walks to school. (改为一般过去时)
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5. Jenny goes shopping with her mother. (改为一般将来时加tomorrow)
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