—Why does the lake smell terrible? —Because large quantities of water _____.
#93664
A
have polluted.
B
is being polluted.
C
has been polluted.
D
have been polluted.
推荐题目
Now that there are still some problems remaining ______, we have to work extra hours tonight.
#91690
A
solved
B
solving
C
to be solved
D
to solve
The machine requires _____, so the workers are required _____ ready.
#98315
A
repair；to get
B
repairing；to get
C
repairing；getting
D
to be repaired；getting
_______ an important role in a new movie, Andy has got a chance to become famous.
#91410
A
Offer
B
Offered
C
Offering
D
To offer
There is nothing more I can try you to stay, so I wish you good luck.
#96072
A
persuading
B
to be persuaded
C
to persuade
D
persuading