It'a......in the north of viet nam than in the south

Bad ; cold ; important ; dangerous ; good
1. It'a......in the north of viet nam than in the south.
2. Is a snake.......than a dog
3. Doing our homework is.....than reading a novel
4. She's not very happy. Her exam results are.....than her sister's
5. Let's go to Da Lat. The weather's.......
there than that in ho chi minh city.