一、单项埴空(共15小题;每小题1分，满分15分)
请从A、B、c、D四个选项中，选出可以填人空白处的最佳选项，井在答属卡上将该选项的标号涂黑。
1. —Is Peter coming?
—No, he____ his mind after a phone call at the last minute.
A. changes B. changed C. was changing D. had changed
【答案】 B
2. The meeting will be held in September, but____ knows the date for sure.
A. everybody B. nobody C. anybody D. somebody
【答案】B
3.I just heard____ bank where Dora works was robbed by____ gunman wearing a mask.
A. the; / B. a; / C. the; a D. a; the
【答案】C
4.If you miss this chance, it may be years ____ you get another one.
A. As B. before C. since D. after
【答案】B
