Question

For many years,people____electric cars.however,making them has been more difficult than predicted.

For many years,people____electric cars.however,making them has been more difficult than predicted. A had dreamed of B have dreamed of C dreamed of D dream of

Answer 1

选B
分析：for many years 所以从B和C中选
C 过去式+for+一段时间表示动作过去，现在不再这样。
所以只能选C。

Answer 2

a good many of后接的是名词的代词形式 3 whatever后不加名词 1 从However,making them has been more这句加上For many years可确认用现在完成时

Answer 3

选B
for many years 是现在完成时暗示

Answer 4

B