--Why does the lake smell terrible? ---Because large quantities of water ______.
#85773
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
推荐题目
______ without friends ______ the most difficult challenge for Chuck while living on the island.
#85606
A
How to survive, is
B
How does he survive, are
C
How does he survive, is
D
How to survive, are
In my pencilbox, ______ a pen, two pencils and three rulers.
#44189
A
there be
B
there are
C
there is
D
it has
A teacher and artist ______coming to speak to us about painting tomorrow afternoon.
#85672
A
is
B
are
C
was
D
were
—________ one and a half months enough for the project to be finished?—I am afraid not.The professor is ill and only after he recovers ________ go on with it.
#85565
A
Is；he can
B
Are；he can
C
Is；can he
D
Are；can he