--- Bob doing homework?
---No, he isn’t. He is a letter.
| A．Does, writes | B．Is, writes | C．Does, writing | D．Is, writing |
If I’m free,I’d like to spend ______holiday in Dunhuang.
| A．three days | B．a three-day | C．three-day | D．three day |
----_______ do you have out with your friends?
----Once a week.
| A．How long | B．How often | C．How many | D．How soon |
The accident took place ______ a cold February evening.
| A．on | B．in | C．At | D．for |
Don’t eat ________meat.If you do so, you’ll get ______ fat.
| A．much too, too much | B．too much, much too |
| C．much too,many too | D．too many, much too |
----Must I finish that work today?
----No, you _____. You may finish it in three days.
| A．mustn’t | B．needn’t | C．Shouldn’t | D．couldn’t |