A cook will be immediately fired if he is found _________ in the kitchen.
| A．smoke | B．smoking | C．to smoke | D．smoked |
The little girl who got lost decided to remain __________ she was and waited for her mother.
| A．where | B．what | C．how | D．who |
Green is usually regarded as a __________ of life while red stands for joy and victory.
A. symbol B. sign C, mark D. signal
It's rude __________ you to ask his salary the first time you __________ him.
| A．of；meet | B．of；met |
| C．for；meet | D．for；meet with |
We should consider the students' request __________ the school library provide more books on popular science.
| A．that | B．when | C．which | D．where |
—How much do you know about the 3D film technology?
_ A little. Not until the hot movie Avatar __________ some about it.
| A．did I see ； did I begin to learn |
| B．I saw;I began to learn |
| C．I saw;did I begin to learn |
| D．did I see；I began to learn |