—Why does the lake smell terrible?—Because large quantities of water_______________.
#99629
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
推荐题目
–Excuse me, sir, didn’t you see the red light?--Sorry, my mind _____ somewhere else.
#100402
A
has been wandering
B
was wandered
C
had wandered
D
was wandering
Some buildings built in the past _______ down and new ones are being built there.
#103572
A
will be pulled
B
had been pulled
C
have been pulled
D
are pulling
He will work in a big company after he _____ the university.
#101540
A
graduates from
B
graduate from
C
will graduate from
D
graduation from
The information that    will become your ability once you use it.
#100450
A
absorbs
B
is absorbing
C
is absorbed
D
had been absorbed