问题
选择题
| — They are quiet, aren't they? — Yes. They are accustomed ______ at meals. |
| A. to talk B. to not talk C. to talking D. to not talking |
答案
答案：D
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| — They are quiet, aren't they? — Yes. They are accustomed ______ at meals. |
| A. to talk B. to not talk C. to talking D. to not talking |
答案：D