___ the front door ___, he had to enter the room through the back door.
| A．Seen; painted | B．Seeing; painted |
| C．Being seen; being painted | D．Seeing; being painted |
They use computers to keep the traffic smoothly.
| A．being run |
| B．run |
| C．to run |
| D．running |
at my classmates’ faces, I read the same excitement in their eyes.
| A．Looking |
| B．Look |
| C．To look |
| D．Looked |
I’m calling to enquire about the position in yesterday’s China Daily.
| A．advertised |
| B．to be advertised |
| C．advertising |
| D．having advertised |
The traffic rule says young children under the age of four and less than 40 pounds must be put in a child safety seat.
| A．being weighed |
| B．to weigh |
| C．weighed |
| D．weighing |
—Can I take a week’s holiday, sir?
—;we are too busy at present.
| A．Don’t worry |
| B．Don’t mention it |
| C．Forget it |
| D．No problem |