题目内容

22. You can choose ________ book you like among these.

A. no matter what
B. whatever
C. whose
D. whichever

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23. Is this research center ________ we visited the modern equipment last year?

A. where
B. that
C. the one
D. which

1. __________ 世纪

1. __________ 时代,时期,年龄

1. _p_________ 过去

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