21. I found history very _____.
A. amusing B. amused C. amuse D. to amuse
22. Her _____ include swimming and reading.
A. interests B. interesting C. interested D. interest
23. Great Opera _____ of the world can be heard at the Sydney Opera House.
A. sing B. singings C. singers D. to sing
24. English is the _____ language on one- fifth of the land area of the world.
A. office B. official C. officer D. officially
25. English tends towards _____.
A. simple B. simplicity C. simplier D. simply
26. He looks _____ today than yesterday.
A. good B. well C. better D. goodly
27. There is a _____ difference between the north and the south.
A. region B. regional C. regionally D. regioner
28. He went to a seaside resort because he was keen on _____.
A. windsurf B. windsurfing C. to windsurf D. to windsurfing