32. We spent two hours watering the flowers.

33. In spite of his extreme richness, he is not happy.

34. He is expected to come on time.

35. What should be done in such cases?

36. She wouldn't be allowed to ride the motorbike by her mother.

37. We were astonished at what we saw.

38. Don't speak until you are spoken to.

39. Your name isn't allowed to be written on this piece of paper.

40. Don't let you be smiled at. 

41. Dogs are difficult to train.

42. The one she showed me was too small.

43. You can buy Tax-free goods before you get on the plane.

44. Was the garage built at the same time as the house?

45. Why don't we go abroad for our holiday this year?

32. It took ustwwo hours to water the flowers

=> We spent two hours watering the flowers.

33. He is extremely rich but he is not happy

=> In spite of his extreme richness, he is not happy.

34. It is expected that he will come on time

=> He is expected to come on time.

35. What should we do in such cases?

=> What should be done in such cases?

36. her mother wouldn't let her ride the motorbike

=> She wouldn't be allowed to ride the motorbike by her mother.

37. What we saw astonished us

=> We were astonished at what we saw.

38. Don't speak until they speak to you

=>Don't speak until you are spoken to.

39. Don't write your name on this piêc of paper

=> Your name isn't allowed to be written on this piece of paper.

40. Don't let people smile at you 

=> Don't let you be smiled at. 

41. It is difficult to train dogs

=> Dogs are difficult to train.

42. she showed me one that was too small

=> The one she showed me was too small.

43. You can buy Tax-free goods before you get on the plane.

44. Was the garage built at the same time as the house?

45. Why don't we go abroad for our holiday this year?