单项选择题

A.had dreamed ofB.have dreamed ofC.dreamed ofD.dream of……

For many years, people（）electric cars. However, making them has been more difficult that predicted.

A.had dreamed of
B.have dreamed of
C.dreamed of
D.dream of

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单项选择题英语课程改革就是要改变英语课程过分重视______和词汇知识的讲解与传授。