单项选择题
Professor Li, many students want to see you. () they wait here or outside
A. Do B. Will C. Shall D. Are
单项选择题 There are only 30 seconds () and we can’t but () without him.
单项选择题 I() asleep because it took me a long time to realize that the telephone was ringing.
单项选择题 The next morning she found the man () in bed ,dead.