—They are quiet, aren’t they? —Yes. They are accustomed ______ at meals.
#96796
A
to talk
B
to not talk
C
to talking
D
to not talking
推荐题目
We hope your suggestion will contribute __________ the problem. 
#88240
A
to solving
B
to solve
C
of solving
D
solved
We finished the run in less than half the time _________.
#97914
A
allowing
B
to allow  
C
allowed
D
allows