河北省正定中学09-10学年高二上学期第三次月考（英语）

1.The girl looked at me with a _____ expression. Maybe the problem was quite _____.

A. puzzled; puzzling         B. puzzling; puzzled 

C. puzzled; puzzled                 D. puzzling; puzzling

2.Without facts, we can’t form a correct opinion, for we need to have actual knowledge ____ our thinking.

A. which to be based on           B. which to base on 

C. on which to base              D. which to base

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