---___________ do they visit their old friends?
---Once a year.
| A．How long | B．How often |
| C．How many times | D．How much time |
—Didn't the robot have a rest?
—_______. Because it never gets tired.
| A．Yes, it did | B．No, it didn't | C．Yes, it had | D．No, it hadn’t |
The teacher asked the students________________.
| A．where did they go |
| B．that they should do it carefully |
| C．if their parents allowed them to come here |
| D．how they can finish it in such a short time |
______ ways to get on well with your classmates, or you will make yourself very lonely.
| A．To find | B．Find | C．Finding | D．Found |
Oh, dear! There isn’t enough _____ for us in the lift. Let’s wait for the next.
| A．floor | B．seat | C．room | D．ground |
I first met Lisa three years ago. She ________ at a radio shop at the time.
| A．worked | B．was working | C．has worked | D．has been working |