—They are quiet, aren’t they? —Yes. They are accustomed ________ at meals.
#89609
A
to talk
B
to not talk
C
to talking
D
to not talking
推荐题目
 _______ on time, this medicine will be quite effective. 
#98430
A
Taking
B
Being taken
C
Taken
D
Having taken
The bad weather meant__________ the rocket launch or 48 hours,.
#98677
A
delaying
B
having delayed
C
to delay
D
to have delayed