一、选词填空
1.contradict; contradictory
The witnesses’ statements each other and the fact remains unclear.
The witnesses’ statements are and the fact remains unclear.
2.infect; infection
A single mosquito can a large number of people.
Which virus has caused the is still unknown.
3.proof; prove
Have you got any that you are the owner of this bike?
How can you that you are the owner of this bike?
4.multiple; multiply
He suffered injuries in the accident.
We have to our efforts to achieve what we want.
5.intervene; intervention
The situation calmed down when police .
The of the United Nations helped solve the issue.
