Whatever you do, ________ is difficult if you put your heart into it.
| A．nothing | B．anything | C．something | D．everything |
The air in our city is getting much_____ now than a few years ago.
| A．clean | B．cleaner |
| C．cleanest | D．the cleanest |
We have to stay at home_____ the bad weather.
| A．but | B．because | C．because of | D．although |
If you see the cartoon film, it will make you_____.
| A．to laugh | B．laugh | C．laughing | D．laughed |
_____ a good time we had yesterday!
| A．Where | B．How | C．What | D．Why |
When winter comes, days get _____ .
| A．long and long | B．longer and longer |
| C．shorter and shorter | D．short and short |