The scientists succeeded in finding a vaccine for that disease.




A.The scientists were able to find a vaccine for that disease.
B.The scientists were finding a vaccine for that disease.
C.The scientists should have found a vaccine for that disease.
D.The scientists couldn't find a vaccine for that disease.

______(14)




A.number
B.value
C.evaluation
D.quality

A.surround
B.increase
C.remove
D.mature

She had to borrow her sister’s car because hers was _______.




A.out of work
B.out of order
C.off chance
D.off work

My supervisor is angry with me. I didn’t do all the work that I _______ last week.




A.must have done
B.can have done
C.may have done
D.should have done

_______ down to dinner than the telephone rang.




A.No sooner had I sat
B.Scarcely I sat
C.Hardly had I sat
D.No sooner I sat

It is interesting to take _______ a new hobby such as collecting stamps or going fishing




A.over
B.on
C.in
D.up

As the two teams left the football ground, the 100,000 _______ gave them a standing ovation.




A.bystanders
B.spectators
C.viewers
D.audiences

Let’s do something to protect the environment, _______we?




A.needn’t
B.must
C.shall
D.will

While the language barrier was once an obstacle to trade________




A.the case doesn't longer exist
B.the technical case is now no more
C.which is no longer the case
D.the technical hurdle is now the case.