问题
选择题
| I haven't finished my composition. I _____ for two hours and a half. |
| A. have written it B. have been writing it C. wrote it D. am writing it |
答案
答案：B
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| I haven't finished my composition. I _____ for two hours and a half. |
| A. have written it B. have been writing it C. wrote it D. am writing it |
答案：B