They will lose the game _______ they try their best.
| A．unless | B．once | C．since | D．after |
—Wow! Your school is so beautiful!
—Thank you! It _____ last year.
| A．build | B．built | C．is built | D．was built |
The teacher told us _____ to the recorder and read the dialogue three times.
| A．listen | B．listened | C．listening | D．to listen |
Although they were tired, they still went on _____.
| A．working | B．to work | C．work | D．worked |
_____ you tell me how to use this digital dictionary?
| A．May | B．Must | C．Can | D．Need |
We _____ more than 1,200 English words already, do you know?
| A．learn | B．will learn | C．have learned | D．are learning |