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 Havingawalkaftersupperiscertainlygoodfortheoldpeople,b...

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 Havingawalkaftersupperiscertainlygoodfortheoldpeople,b...

 Having a walk after supper is certainly good for the old people, but it remains ______ whether they will enjoy it.

   A. to see                 B. to be seen             C. seeing                D. seen

【回答】

B

知识点:非谓语动词

题型:选择题

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