一、单项填空 （共15小题；每小题1分，满分15分）
从A、B、C和D四个选项中，选出可以填入空白处的最佳选项。
1. —Excuse me. Is ______ e-dictionary yours?
—Oh, yes. I am looking for it everywhere. Thank you very much.
A．a B．an C．the D．不填
2. —The earthquake in Ya'an took place ____two past eight ____the morning of April 20th.
—Yes, some people were still sleeping for it was weekend.
A. in ; on B. on ; in C. at ; in D. at ;on
3. —Oh, Dad, I really feel _______ before the exam.
—Take it easy. Sure you are the best.
A. quiet B. confident C. nervous D. bored
