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．
#101602
A
have not been paying
B
had not been paying
C
were not paying
D
will not be paying
推荐题目
The meeting ___________ yesterday is of great importance .
#101607
A
being held
B
having held
C
to be held
D
held
Jane, I hear you _____ to China. Have you got everything right?
#100273
A
have traveled
B
travel
C
are traveling
D
would travel
– Where does your brother work, Jane?-- In America. But he __________in China for 5 years.
#100250
A
has been working
B
has worked
C
worked
D
was working