1.2. My kitchen is smaller than yours.
=> Your kitchen....
13. Living in the big cities is busier than living in the country.
=> Living in the country is not....

14. Jim drives more carefully than Jack does.
X
=> Jack....
15. Other oceans in the world aren't as large as the Pacific one.
=> The Pacific Ocean is
16. Lan's schoolbag is more modern than Hoa's schoolbag.
=> Hoa's schoolbag isn't
X 17. Mum doesn't speak English as well as Dad.
=> Dad.
48. Jack's grades were better than Tom's grades.
=> Tom's
49. Tommy's brother isn't as tall as he is.
-=>Tommy
20. Their tree is more beautiful than our tree.
- Our tree is