25.　　 Maths is more difficult than physics. Physics is ______ difficult than maths. 　 Physics isn’t ______ ______ ______ maths.

24.　　 Everyone is healthy. ______ one is ______.

23.　　 What’s the matter with him? What’s ______ ______?

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.