—I wonder why the thinnest plastics bags, though ________ , are still in use here.—Well, it’s no easy job to solve this problem effectively.
#96104
A
banning
B
banned
C
to ban
D
having banned
推荐题目
Robert is said______ abroad, but I do not know what country he studied in.
#98572
A
to have studied
B
to study
C
to be studying
D
to have been studying
Who is ________the fire in the kitchen?
#94275
A
blame
B
to blame for
C
blamed
D
blame for