Give the correct form of the adjectives in brackets

Exercise 1. Give the correct form of the adjectives in brackets
1. This chair is .......than that one.(comfortable)
2. Your flat is...........than minh ( large)
3. The  weather today is ......... than is was yesterday.(hot)
4. Chinese bicycles are............than japanese jones.(bad)
5. Mathematics is.........than english.(difficult)
6. He times..............than his friends.(careful)