66. A. Although
67. A . Than
68. B. During
69. D. Pilot's
76.Early this morning, the children decided to go for a run.
77.Life in the country has been definitely changing better.
78.The date of the meeting will have to be changed tomorrow
79.Last year, we spent a week in My Son and I didn't want to leave
80.Watching television is considered the most popular kind of entertainment nowadays
81.After many experiments finally the first successful flight was made by the Wright brothers
82.My grandfather used to tell us stories until we fell asleep.
83.I used to collect shells when I was a kid
84.My uncle moved to HCM city in 1987 and has lived there since then