The students are doing _______ important task; they share _____ common goal , that is, to be admitted into the famous universities.
| A．an, a | B．an, the | C．不填， 不填 | D．不填 , a |
So far his spoken English is improved _____ .
| A．much | B．better | C．well | D．greatly |
It is _____ impossible.
| A．very | B．quite | C．rather | D．fairly |
Don’t leave your work____, .
A done half B. half done C. a half done D. done a have
Four is ____ of two.
| A．double | B．two | C．the two | D．the double |
This is the ______ short story that he has written.
A. three hundred and forty-fifth
B. three hundred and forty-fifth