Experts warn that medical waste from hospitals, if properly, may contribute to spreading diseases．
#88622
A
not handled
B
not being handled
C
not to be handled
D
not having been handled
推荐题目
It rained continuously for seven days, completely ___________ our holiday.
#90267
A
ruined
B
ruining
C
to ruin
D
has ruined
Years later, I began ______ what he told me right.
#97738
A
knowing
B
to know
C
recognize
D
to recognize
After completing and singing it, please return the form to us in the envelope _________.
#89992
A
provided
B
providing
C
having provided
D
provide