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造几个完成进行时的句子 1肯定句 2.否定句 3.一般疑问句(要有肯否定回答) 4、特殊疑问句(回答)

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造几个完成进行时的句子 1肯定句 2.否定句 3.一般疑问句(要有肯否定回答) 4、特殊疑问句(回答)
1.He has been a doctor for 3 years.
2.She hasn't got here.
3.Have you been to London?No,I haven't.
4.What have you done since 8 o'clock?I've finished all the homework.