—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
网友回答
A. to talk
B. to not talk
C. to talking
(答案→)D. to not talking
解析：考查动词用法。句中be accustomed to doing习惯于做，根据句意用否定。句意：——他们很安静，不是吗？——是的，他们习惯于吃饭不讲话