－Why does the river smell terrible?－Because large quantities of water______．
#100039
A
have been polluted
B
is being polluted
C
has been polluted
D
have polluted
推荐题目
Sorry, I am too busy now. If I _____ time, I would certainly go for an outing with you.
#102147
A
have had
B
had had
C
have
D
had
It’s the third time he _________with her in a week.
#101319
A
had quarreled
B
quarreled
C
has quarreled
D
quarreling
--- Haven't I told you that I like the beef well done?---Yes, but I _____ it longer than I usually do.
#104698
A
was cooking
B
will cook
C
cooked
D
had cooked
All the preparations for the task _______, and we’re ready to start.
#99864
A
complete
B
have completed
C
had been completed
D
have been completed
---Harry, we want to know your view about the reform being carried out in our school.---OK. I ________ to that.
#99980
A
am coming
B
have come
C
came
D
come