33.Daisy told Peter to learn harder for the final exam
34. This is the first time Ba has ever been to Ho Chi Minh city
35. Despite being a poor student , Tom learns well
36. Singapore is said to be green and clean
37. The only thing which makes me worried is how to go home
38. The water in this lake is too dirty for us to swim
39. Mary could not go to school yesterday because of her sickness / being sick
40. Thank you very much for helping me a lot with the work
1D I last went to the cinema ten years ago
2B had seen with his own eyes
3D A&C are correct
4A Janet asked us where we had been spending our holidays
5B no one could recognize him
