29. In the centre is the bigest island in the bay.                 ____bigest => biggest___________

30. Big cities are much more better than the countryside. _______more better => better_____________

31. I must to go to the bank and get some money.            ________must to => must_____________

32. Fansipan is Vietnam's the highest mountain.               __________the highest => highest___________

33. That is the worse joke I've ever heard in all my life.     _______worse => worst______________

34. Look! There is a 'NO PARKING' sign. You must park here. ______must => mustn't___________

35. This is the most quickest way to the hotel.                   _____most quickest => quickiest__________ ​

36. We mustn't hurry or we'll late for class.                        _______mustn't => must______________

V.

29. bigest => biggest 

30. much => bỏ 

31. must to => must 

32. the => bỏ 

33. worse => worst 

34. must => musn't 

35. most => bỏ 

36. mustn't => must