Certainly I posted your letter---I remember ____it.
#98874
A
posting
B
to post
C
to be posting
D
have posted
推荐题目
___ himself in carrying out an experiment, he can’t spare time to look after his children.
#95619
A
Occupied
B
Having occupied
C
Occupying
D
Having been occupied
-- They are quiet, aren’t they? --- Yes. They are accustomed __________ at meals.
#96379
A
to talk
B
to not talk
C
to talking
D
to not talking
