第I卷 选择题（60分）
一、单项选择题：(共15小题;每小题1分, 计15分）
1. Pierre wanted to tell us _____ very exciting story, but he couldn't remember _____ end at last.
A. a, the B. an, the C. the, an D. /, a
2. ---How many students do you think are still in the classroom now?
---I am afraid there is ______ in it. It's too late.
A. no one B. nobody C. none D. no
3. I thought necessary for students to take an interest in all subjects.
A. it's B. this C. it D. that's
4. Nowadays of business letters are written in English.
A. two third B. two thirds C. two three D. second three
