问题补充:
—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:
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