Letterboxes are much more _______ in the UK than in the US, where most people have a mailbox instead.
| A．common | B．normal | C．ordinary | D．usual |
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 |
Some of you may have finished unit one. __________ you can go on to unit two.
| A．If you may | B．If you do | C．If not | D．If so |
He observed a stranger __________ around the store at midnight.
A, wandering B. to wander
C. wander D. to be wandering