Miss. Gao _______ in the library for three years. But now she is a teacher.
| A．worked | B．has worked | C．had worked | D．has been working |
— Jack, you seem in high spirits.
— ______ We won the match 4-0.
| A．Guess what? | B．So what? |
| C．No wonder. | D．No doubt. |
Tim is in good shape physically ______ he doesn’t get much exercise.
| A．if | B．even though |
| C．unless | D．as long as |
______ production up by 60%, the company has another excellent year.
| A．As | B．For | C．With | D．Through |
The airport ______ next year will help promote tourism in this area.
| A．being completed | B．having been completed |
| C．completed | D．to be completed |
One-third of the country ______ covered with trees and the majority of the citizens ______ black people.
| A．is; are | B．is; is |
| C．are; are | D．are; is |