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.
#100802
A
have not been paying
B
had not been paying
C
were not paying
D
will not be paying
推荐题目
It is said that the early European playing-cards ______ for entertainment and education.
#102353
A
were designed
B
have designed
C
have been designed
D
were being designed
When I got on the bus，I_____I had left my wallet at home．
#102064
A
was realizing
B
realized
C
have realized
D
would realize
---Is dinner ready?---Not yet. The main course ______. It needs another ten minutes.
#100637
A
was not done
B
had not done
C
is not done
D
has not done
At 2004 Athens Olympic Games, Liu Xiang excited people all over Asia when he became the first Asian _______ the gold medal in the men’s 110-meter hurdles.
#103567
A
has won
B
won
C
to win
D
winning