I. 单项选择(30分)
1. I haven’t start it ________.
A. already B. just C. ever D. yet
2. There aren’t ________ astronauts in the spacecraft.
A. some B. any C. much D. a lot
3. –Your father isn’t in. Where is he? He ________ Shanghai on business.
A. has been to B. has been at C. has gone to D. went
