一、选择填空(共15小题，每小题l分，满分l5分)
1. The children stood in __ circle and danced to music.
A. a B. an C. the D. 不填
2. They didn'tgo to bed.__ the work was finished.
A. when B. while C. until D. after
3. If by any chance Peter comes to us, please ask him to leave a ___.
A, letter B. sentence C. message D. notice
4. My father has a habit of jogging ____ the Huanghe River for an hour in the morning.
A. between B. along C. over D. through
5. She got up to get some sleeping pills but found there was __ left at home.
A. nothing B. none C. something D. nobody
6. -My mother says that we won't go on a trip to Beijing. I just can't understand.
-_______You were looking forward to it.
A. Never mind. B. Enjoy yourselves! C. What a pity ! D. Don't worry about it
