By the end of last year, we _________seven hundred English words.A． learnedB．hav
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By the end of last year, we _________seven hundred English words.| A． learned | B．have learned | C．had learned | D． would have learned |
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答案
| C |
解析
| 考察时态，by是完成时的标志，by后面跟什么时间，主句就用什么完成时，根据last year过去时间可知，主句应该用过去完成时 |
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