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The road conditions were quite good, _____ was more than we could expect.

A. which
B. what
C. that
D. it
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科目：高中英語 來源：北京期末題 題型：單選題

The road conditions were quite good, _____ was more than we could expect.
[     ]
A. which
B. what
C. that
D. it

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