问题
ctory was built in a secret place, around ________high mountains.
A:which was
B:it was
C:which were
D:them were
B:it was
C:which were
D:them were
正确答案是：
同类题型
Mr. White always expected his son _______________ anactive part in the classes.
Samaranch, whois old friend of Chinese people, diedon April 21, 2010.
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