问题
选择题
The art centre is _____ used to be a factory, _____ millions of tractors were made.
A．what; where
B．where; where
C．what; which
D．where; which
答案
答案：A
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The art centre is _____ used to be a factory, _____ millions of tractors were made.
A．what; where
B．where; where
C．what; which
D．where; which
答案：A