_______ such heavy pollution already, it may now be too late to clean up the river.
#98615
A
Having suffered
B
Suffering
C
To suffer
D
Suffered
推荐题目
Much attention should be paid _______ the wild animals as many of them are dying out.
#96777
A
protect
B
to protect
C
protecting
D
to protecting
One third of the Ukrainian population live in the eastern region near Russia and speak Russian, most of them ______ closer to Russia.
#88597
A
are feeling
B
feel
C
feeling
D
are felt
You shouldn’t stand there _____ the milk ____ over.
#97323
A
watching; boiled
B
watching; boiling
C
to watch; boiling
D
to watch; boiled
We have made up our minds to __________ teaching after we graduate from college.
#96976
A
take in
B
set in
C
set up
D
take up
I had Helen's brother _____ the windows, but Helen had them _____ instead.
#98353
A
to clean； cleaned
B
cleaned； cleaned
C
cleaning； cleaned
D
clean； cleaned