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For many years, people __ electric ears. However, making them has been more difficult than predicted.
A. had dreamed of B. have dreamed of C. dreamed of D. dream of
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For many years, people __ electric ears. However, making them has been more difficult than predicted.
A. had dreamed of B. have dreamed of C. dreamed of D. dream of
查看习题详情和答案>>
For many years, people __ electric ears. However, making them has been more difficult than predicted.
A. had dreamed of B. have dreamed of C. dreamed of D. dream of
查看习题详情和答案>>
For many years, people __ electric ears. However, making them has been more difficult than predicted.
A. had dreamed of B. have dreamed of C. dreamed of D. dream of
查看习题详情和答案>>
For many years, people __ electric ears. However, making them has been more difficult than predicted.
| A．had dreamed of | B．have dreamed of | C．dreamed of | D．dream of |