注意：此页面搜索的是所有试题
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.
A. was B. are
C. were
became very unreliable after 40—50 thousand miles.
A. was B. are
C. were
参考答案