___ H1N1 flu from spreading, our government has taken some effective measures.
#96789
A
Prevent
B
Preventing
C
Prevented
D
To prevent
推荐题目
_____ the teacher's suggestion, Tom finally found a way to settle the problem.
#98593
A
Following
B
To follow
C
Follow
D
He followed
The library needs __________, but it’ll have to wait until Sunday.
#91278
A
cleaning
B
be cleaned
C
clean
D
being cleaned
The river is said __________ in a fire during the past 10 years. 
#91800
A
to have polluted
B
it has been polluted
C
to pollute
D
to have been polluted
_______with  his old one, Michael’s  new house is like a huge   palace
#95559
A
Comparing
B
Compares
C
To compare
D
Compared