3/ Choose the best answer: 1. The program must be new. I_______it before. A. have never been seen B. have ever seen C. have never seen D. have seen 2. Their new house________yet. A. has not finished B. has not been finished C. finished D. is finished 3. Professor Kidd________3 books since 1999 and she's working on fourth. A. has been writing B. wrote C. has written D. writes 4. Maybe she won't come this afternoon. How long you_______for her? A. have you wait B. has you waited C. have you waited D. did you wait 5. The milk________by the cat since yesterday. A. has drunk B. has been drunk C. drinks D. is drunk 6. I________hot food before. It is quite strange to me. A. haven't try B. haven't tried C. don't try D. didn't try 7. When we came the stadium, the home team_______by 3 to 1. A. have beaten B. have been beaten C. are beaten D. beat