They were made ________ ten hours a day.
| A．working | B．to work | C．work | D．worked |
If it had been fine yesterday，we could have watched that air show. But it ________all day.
| A．has rained | B．had rained |
| C．rained | D．rains |
Yesterday evening，I ________along the street when I suddenly met my maths teacher.
| A．walk | B．walked |
| C．was walking | D．am walking |
The population of the world ________still ________now.
| A．will；grow | B．has；grown |
| C．is；growing | D．is；grown |
There ________a basketball match between Class One and Class Three this afternoon.
| A．is going to be | B．will have |
| C．are going to be | D．is going to have |
Our math teacher ________in our school for 20 years and he ________here when he was 23 years old.
| A．has taught；has come | B．taught；comes |
| C．taught；came | D．has taught；came |