---They are quiet, aren’t they?
---yes. They are accustomed at meals.
A. to talking
B. to not talking
C. to not talk
D. to talk
网友回答
A. to talking
(答案→)B. to not talking
C. to not talk
D. to talk
解析：考查固定句式和动名词的否定式；固定句式:be accustomed to doing sth习惯做某事；本句中的to是介词，后面要接动名词的形式，动名词的否定式就是在动名词前面直接加not。句意：—他们很安静，不是吗？—是的。他们已解决习惯了吃饭时不要说话。故B正确。