10. People in big cities are not usually as friendly as those in small towns. (friendlier)
People in small towns are .....friendlier than people in the big cities............
13. A dictionary is thicker than a notebook. (as)
A notebook isn’t ....as thick as a dictionary..............................
14. Peter appeared the most confused of all his friends.(more)
Peter appeared ..more confused than all his friends................................
16. There is no structure longer than the Great Wall. (longest)
The Great Wall is ....the longest structure in the world............................
17. He didn’t try as hard as he could so he failed the exam. (harder)
If he ....had studied harder, he could have passed the exam..................................................
18. Tom and Jerry is higher than Anna. (shortest)
Anna .......is the shortest .............................................
19. The Amazon River is the deepest river in the world. (deeper)
No river in the world ...deeper than the Amazon River........................