-----They are quiet aren’ t they?---No. They are accustomed at meals.A. to talkB. to n

问题补充：

-----They are quiet, aren’ t they?

-----No. They are accustomed at meals.

A. to talk

B. to not talk

C. to talking

D. to not talking

答案：

A. to talk

B. to not talk

(答案→)C. to talking

D. to not talking

解析：考查固定词组。固定词组：be accustomed to sth/doing sth习惯某事/做某事；句意:—他们很安静，不是吗？—不。他们已经习惯了在吃饭的时候说话。故C正确。