—You look________．What’s up，sir?
—I can’t find my ticket，but it’s time to check in．
| A．sleepy |
| B．hungry |
| C．tired |
| D．worried |
Look at those students. ______ hard-working they are!
| A．What | B．What a | C．How | D．How a |
Our teacher told us that the sun ______ the earth light.
| A．gave | B．will give |
| C．has given | D．gives |
If you ask him _____, he will be happy to help you.
| A．politely | B．quickly |
| C．loudly | D．normally |
We all know travel can ______ our knowledge of the world.
| A．discover | B．develop |
| C．increase | D．review |
Vera is ______ in English class. She puts up her hand every time her teacher asks a question.
| A．patient | B．active | C．quiet | D．funny |