1. My sister is  better-looking (good- looking) than I am.    

2. A book is more wonderful(wonderful) than a comic.      

3. Nina walks   slowlier(slowly) than her father.

4. She is happier (happy) than I am.

5. This bike is cheapper (cheap) than mine.

6. This house is much more comfortable (comfortable) than that one.

7. A dog is  heavier( heavy) than a cat.

8. My pencil is longer ( long) than yours.

9. New teacher is nicer ( nice) than old one.

10. Ho Chi Minh is larlger ( large) than Bien Hoa.