1b took

2a have

3c to

4c development

5b have been

6d designers

7a so

8c have been added

9c had

10b bought

11c doing

12a go

13b panels

14c which

15a to returning

16d who

17d mosque

18c fashionable

19d have taught

20c at/on

21a so

22c should

23b has he

24a pesticides

25a could

26c are used

27d hasn't eaten

28c on

29c clothes

30c aspect

31b traveling

32d had

33c didn't he

34d which

35d B and C are correct

36b unless

37c excited

38b had

39a put off

40d rely

41b although

42c rains

43b thanks a lot

44d having

45a happily

46a whose

47b in

48c as

49a celebrating

50b take part in

51d interactive

52c widely

53d prevent/from

54c noisy

55a will be preserved

56c so that

57a although

58b which

59c would invite

60b natural

61c watching

62d so

63d was

64c from

65c working

66a studies

67b happily

68b but

69a thanks a lot

70d connection

71c treasure