With temperature ________ so rapidly, we could not go with the experiment.
#4563
A
fall
B
falling
C
fallen
D
to fall
推荐题目
The problems at the meeting tomorrow are really hard to solve．
#4945
A
discussed
B
to discuss
C
to be discussed
D
discussing
____people in the world are sending information by E-mail every day.
#4850
A
Several million
B
Many millions
C
Several millions
D
Many million
.The World Health Organization gave a warning to the public without any ______when the virus of H1N1 hit Mexico in April, 2009.
#4749
A
delay
B
effort
C
schedule
D
consideration
The environment is getting worse in the present days, so the government must take _______ to stop people _______ too many trees.
#4681
A
methods; to destroy
B
methods; from destroying
C
measures; from destroying
D
measures; to destroy