问题
选择题
| He _____ English for ten years by the time he graduates from the university next year. |
A. learned B. will have learned C. has learned D. had learned |
答案
答案：B
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| He _____ English for ten years by the time he graduates from the university next year. |
A. learned B. will have learned C. has learned D. had learned |
答案：B