New ways have been found to prevent the river ______.
#70821
A
not to be polluted
B
against polluting
C
from polluting
D
from being polluted
推荐题目
Listen! Do you hear someone _________ for help?
#70902
A
call
B
calling
C
to call
D
called
 More than 5,000 people _______ the important meeting.
#74529
A
took
B
attended
C
took part
D
joined
The art show was        being a failure; it was a great success.
#72639
A
far from
B
along with
C
next to
D
regardless of