22.　　 She isn’t free now. She’s at work. She is ______ ______.

21.　　 Mark Twain wrote the book. Mark Twain ______ ______ ______ of the book.

20.　　 I bought this dictionary for 58 yuan. I ______ 58 yuan ______ this dictionary.

19.　　 He is sure to be on time. I’m sure ______ ______ ______ on time.

18.　　 This kind of medicine is much too expensive for poor people. The poor people ______ ______ ______ ______ this kind of medicine.

17.　　 He was surprised to find the girl was blind. _____ ______ ______, he _____ the girl was blind.

16.　　 Lin Tao runs faster than the other two boys. Lin Tao runs ______ of the ______ boys.

15.　　 If you don’t study harder, you won’t catch up with the others. If you don’t study harder, ______ ______ ______ the others.

14.　　 I woke up very late this morning, so I was late for school. I ______ ______ up ______ ______ ______ get to school on time.

13.　　 The man upstairs always dropped his shoes on the floor, so the man downstairs couldn’t get to sleep. The man downstairs ______ ______ ______ get to sleep ______ the man upstairs didn’t put his shoes ______ on the floor.