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题目内容
（国家开放大学管理英语3）
Not only ________ many cars built in the 1970s ugly and poorly designed, they also became very unreliable after 40-50 thousand miles.
选择一项：
A.
was
B.
are
C.
were
选择一项：
A.
was
B.
are
C.
were
参考答案
