---They are quiet, aren’t they? --Yes.
题型:选择题
问题:
---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
---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