What will people die of in 100 years? If you think that is a simple question, you ______ attention to the revolution taking place in biotechnology．
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A
have not been paying
B
had not been paying
C
were not paying
D
will not be paying
推荐题目
—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
Mum, I was wondering if you could lend me a few dollars until I________ on Friday.
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A
get paid
B
got paid
C
have paid
D
had been paid
By the end of last year, another new gymnasium________ in London.
#99201
A
have been completed
B
were completed
C
had been completed
D
was completed
I know the teacher ________ Mary when he spoke of a bright girl.
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A
referred to
B
had referred to
C
was referring to
D
refers to
The door ．Something has gone wrong with it．
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A
won’t lock
B
won’t be locked
C
can’t lock
D
isn’t locked