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Lasttermourmathsteachersetsodifficultanexaminationprobl...

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问题详情:

Lasttermourmathsteachersetsodifficultanexaminationprobl...

Last term our maths teacher set so difficult an examination problem _____ none of us worked out.

A.that           B.as           C.so that         D.which

【回答】

B

知识点:定语从句

题型:选择题

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