.(浙江卷15). 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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.(浙江卷15). 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 |