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 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

 

【答案】

 B

【解析】考查反意疑问句。陈述句中的谓语中虽有情态动词must,但此处must表示对正在进行的动作进行推测,将其不看作情态动词。而must后有助动词be,故反意疑问句根据助动词be来构成,选B。

 

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48. A prince had some monkeys trained to dance.  Being naturally good at learning, they showed themselves excellent pupils, and in their rich clothes and masks, they danced as well as any of the courtiers.  Their performance was often repeated with great applause, till on one occasion a courtier, bent on mischief, took from his pocket a handful of nuts and threw them upon the stage.  The monkeys at the sight of the nuts forgot their dancing and became (as indeed they were) monkeys instead of actors.  Pulling off their masks and tearing their robes, they fought with one another for the nuts.  The dancing spectacle thus came to an end in the laughter and ridicule of the audience.

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