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题目内容
(大连工业大学-大学英语3)
(单选题) Since 1780, when the town’s first hat factory ______ in Danbury, Connecticut, the town has been a center for hat manufacturing in the United States.(本题3.5分)
A、 were established
B、 was establishing
C、 had been established
D、 was established
A、 were established
B、 was establishing
C、 had been established
D、 was established
参考答案