问题描述：
| It is not ____for me to return all the books to the library now because I still need them. |
| [ ] |
| A. mature B. convenient C. available D. tight |
考点提示：形容词
最佳答案：
| B |
问题描述：
| It is not ____for me to return all the books to the library now because I still need them. |
| [ ] |
| A. mature B. convenient C. available D. tight |
考点提示：形容词
| B |
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