—Theyarequiet，aren'tthey?—Yes.Theyareaccustomed

問題詳情：

—They are quiet，aren't they?

— are accustomed ________ at meals.

A．to talk ­                         B．to not talk

C．to talking                        D．to not talking

【回答】

D

知識點：介詞

題型：選擇題