一. 单项选择（共15小题，每小题1分，计15分）
从A、B、C、D四个选项中选出一个可以填入句中空白处的最佳答案。
1. Cindy is amazing singer. She has lots of fans.
A. a B. an C. the D. /
2. It’s very kind you.Thank you for your help.
A. on B. of C. at D. in
3. She is new here, so we know about her.
A. nothing B. something C. anything D. everything
4. We won’t start the meeting our teacher arrives.
A. though B. while C. until D. or
