—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
―Twenty dollars, please!― How terrible!―I ________ to bring my wallet with me.
#104499
A
was forgetting
B
forgot
C
had forgotten
D
am forgetting
—Has your former classmate come back from America?—Yes, he _____ there for 8 years.
#101701
A
has stayed
B
stays
C
stayed
D
had stayed
—Dick insisted he nothing wrong, and should not be criticized. Why?—Because he couldn’t help but tell a white lie.
#100630
A
did; tell
B
had done; but tell
C
do; telling
D
do; to tell
---Remember the first time we met, Mary? ---Sure．You ______ in the supermarket．
#103848
A
had shopped
B
have shopped
C
were shopping
D
shopped
It is the first time that I _______ this kind of moon cake.
#101077
A
enjoyed
B
haveenjoyed
C
enjoy
D
had enjoyed