—Why does the lake smell terrible?—Because large quantities of water .
#103559
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
推荐题目
A new cinema __________ here. They hope to finish it next month.
#101120
A
will be built
B
is built
C
has been builk
D
is being built
I am sorry that I can not meet you at the airport. I Changsha by the time you come back from abroad.
#103218
A
am leaving
B
will leave
C
will have left
D
have left
----_____ David and Vicky _____ married?----For about three years.
#100703
A
How long were … being
B
How long have … got
C
How long have … been
D
How long did … Get
I first met your sister ten years ago, when she ____at a supermarket as a salesgirl.
#102409
A
has worked
B
had worked
C
was working
D
had been working
. – How did you spend your national holidays?– Oh, I________most of my time watching TV, and then I was invited to visit a relative in Qingdao.
#103732
A
have spent
B
was spending
C
spent
D
had been spending