题目
have/has been doing否定形式
是“They don't have been seeing each other these days.”
是“They haven't been seeing each other these days.”
Have you been learning English for ten years?
是 No,I have't.
还是 No,I don't.
是 It is necessary of us to help others when they are in trouble.
还是 It is necessary for us to help others when they are in trouble.
是“They don't have been seeing each other these days.”
是“They haven't been seeing each other these days.”
Have you been learning English for ten years?
是 No,I have't.
还是 No,I don't.
是 It is necessary of us to help others when they are in trouble.
还是 It is necessary for us to help others when they are in trouble.
提问时间:2020-10-24
答案
是“They don't have been seeing each other these days.”
是 No,I have't.
还是 It is necessary for us to help others when they are in trouble.
是 No,I have't.
还是 It is necessary for us to help others when they are in trouble.
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