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题目
1.Mary has been a nurse for seven years否定句,疑问句,回答 2.Tom has done his homework.
2.Tom has done his homework.否定句,疑问句,回答

提问时间:2020-10-01

答案
1.Mary hasn't been a nurse for seven years.Has Mary been a nurse for seven years?Yes,she has./ No,she hasn't.2.Tom hasn't done his homework.Has Tom done his homework?Yes,he has./ No,he hasn't.
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