63.A do  we believe

64.C did i tell

65.A can you

66.B will the public 

67.D not only do computers

68.A seldom do

69.B nowhere is the

70.B is human behavior studied

71.C nor did we know who did it

72.C no sooner had the announcement been made ,everyone started complaining

73.D not until a new pay was offered,which made the strike call off

74.C not until  i spoke did my uncle recognize me 

75.B no sooner had he arrived at the airport than he called home

76.D not only did helen write a novel but also made a cowboy film

77.A i didn't  get any news about you until i met jack

78.B rarely does my sister go to the cinema

79.C they had no sooner sold their house than they were offered a better price for it