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 Hemustbehelpingtheoldmantowatertheflowers,

问题详情:

 Hemustbehelpingtheoldmantowatertheflowers,

 He must be helping the old man to water the flowers, _________ ?              A. is he                   B. isn’t he                    C. must he                 D. mustn’t he      

【回答】

B

知识点:疑问句 反义疑问句

题型:选择题

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