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【题目】-Did you do well in the math examination yesterday?

-I'm afraid not. Some problems were not as easy as they________.

A. supposed

B.supposed to be

C.were supposed to be

D.were supposed to

【答案】C

【解析】be supposed to do意为“应当;理应”,承前省略的不定式后有be时,不定式符号to后要保留be,故选C项。

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