37. traditional (Adj +N)

38. communication (means of +N) 

39. effectively (V (help)+adv)

Part 7:

40. Would you like an exchange or a refund? 

41. Their classes start at seven in the morning..

42. The survival of the natural world depends on each and every one of us.

Part 8: 

43. My brother whose house was broken in called the police.

44. Mary was too tired to study any more. 

45. If Emily weren't sick today, she could go to school. 

46. Although my grandparents are very busy, they spend a lot of time taking care of us.

Part 9:

47. The floor haven't been cleaned yet.

48. We haven't seen our grandfather for five months.

49. I wish I could remember the answers to these questions.

50. I spent three hours cleaning the house yesterday. 

37. traditional

38. communication

39. effectively

40. Would you like an exchange or a refund? 

41. Their classes start at seven in the morning.

42. The survival of the natural world depends on each and every one of us.

43. My brother whose house was broken in called the police.

44. Mary was too tired to study any more. 

45. If Emily weren't sick today, she could go to school. 

46. Although my grandparents are very busy, they spend a lot of time taking care of us.

47. The floor haven't been cleaned yet.

48. We haven't seen our grandfather for five months.

49. I wish I could remember the answers to these questions.

50. I spent three hours cleaning the house yesterday.