| A．writing | B．write | C．written |
| A．at | B．in | C．on |
| A．I’m working. |
| B．I’m a worker. |
| A．What is he doing? |
| B．What are you doing? |
| A．drinking it’s. | B．drinking their. | C．drink their |
| A．Don’t worry, cheer up. |
| B．You are welcome. |
| C．I am sorry to hear that. |
| A．to | B．for | C．on |
| A．around | B．visit | C．look |
| A．am; fever | B．/; ill | C．am; ill |
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