1: Bio class setting

4: Lingerie buys

8: Shine

12: English poet Alexander

13: Time past

14: Greek gathering spot

16: Unaccompanied

17: Tip for a casino dealer

18: Ostrich look-alikes

19: Employ

20: Four-poster, e.g.

21: Do some research

23: Take an evening course?

24: Intended

26: Just released

28: Hole punch

30: Put up preserves

32: Ever so proper

36: Layered haircut

39: Way off

41: In-box item

42: Arouse great enthusiasm

43: Computer connections

45: Family man

46: In a competent way

48: 'Zounds!'

49: Stadium topper

50: Sit before a lens

51: Place for P.E.

52: Not the other guy

54: 'Quadrophenia' band, with 'The'

56: Items in red

60: Temple student

63: Chimpanzee's hoot

65: Basketball position (abbr.)

67: Muhammad Ali a.k.a. 'The Louisville ___'

68: Carpet makers

70: Test choice

72: Trig ratio

73: Stray from the herd

74: Heavy book

75: Was certain of

76: Juniors, usually

77: Cheat in hide-and-seek

78: Passports, e.g (abbr.)

1: Unfettered

2: Breathing problem

3: Apiary occupant

4: Memory morsel

5: Crucifix

6: First zoo?

7: Watermelon beginning

8: River transport

9: Utterance of revulsion

10: Them, to us

11: Herr's helpmate

12: Fruit with a stone

15: Pharaohs' symbol of power

20: Incidentally, in Netspeak

22: Quaint lodging

25: Carp constantly

27: Secretary's stat

29: Full circle, on the track

30: Off-the-wall play

31: They may be liberal

33: Upgrade the decor

34: Shiite leader

35: Pie à la ___

36: Give this for that

37: King of the road

38: Piercing tools

40: Old-fashioned sort

44: Like a wallflower

47: Archery bow wood

49: Scheduled

51: Slimy stuff

53: Like any number finishing with '9'

55: Fire engine accessories

57: Unseeing

58: Fork features

59: Do a spit take

60: Trite

61: Courts

62: Merrill Lynch's bull, e.g.

64: URL opener

65: Seethe with rage

66: Calendar period

69: Hour div.

71: 'Sweet Pea' singer Tommy

72: Biathlon need