单项选择题

A. had dreamed ofB. have dreamed ofC. dreamed ofD. drea……

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

<上一题目录下一题>

热门试题

单项选择题I have to delay（）the letter.

A. to answer
B. answering
C. answer
D. answered

单项选择题教学技术的使用必须按照______来决定。