1、A strong police force has been placed between the two _____ groups in village to prevent fighting and killing.
A、proponent
B、joint
C、friendly
D、rival
2、Though many things have been changed culturally, there is a commitment and sense of responsibility that have not been _____ in today’s society.
A、held
B、discarded
C、validated
D、expressed
3、People are concerned about the environment issue because air and water pollution not only affects everyone’s health but also makes it difficult for businesses to ______.
A、profit
B、overcome
C、win
D、purchase
4、You will ______ for not learning English; you never know how much you will miss without being able to speak English.
A、cling to
B、impose on
C、come in handy
D、pay a big price
5、Instead of ignoring or envying successful students, I made it my mission to _____ the mysterious causes of their success and greatness.
A、investigate
B、enlighten
C、fluctuate
D、implement
