Our school had about 20 notebook computers but only one-forth_____used regularly. Now we have 50 working all day long.
| A．is | B．are | C．was | D．were |
Does John know any other foreign language ___French?
| A．except | B．but | C．besides | D．beside |
You must work hard,____ you will not learn English well.
| A．if | B．whether | C．otherwise | D．unless |
____production up by 60%, the company has had another excellent year.
| A．As | B．For | C．With | D．Through |
The book is not easy.____ it's rather difficult.
| A．On the one hand | B．On the contrary |
| C．On the other hand | D．On the other contrary |
The number of the employees has grown from 1,000 to 1,200. This means it has risen ____20 percent.
| A．by | B．at | C．to | D．with |