Grammar, 1.1, page 128
Exercise 1
1 had; was learning
2 got; was living
3 was raining; decided
4 are; doing; saw
5 didn't hear; was listening
6 broke; was skiing
7 was working; met
8 weren't listening; asked
Exercise 2
1 had already got engaged; emigrated
2 couldn't buy; had forgotten
3 was; had split up
4 had started / started; left
5 had inherited / inherited; bought
6 retired; had become
7 had settled down / settled down; decided
8 had spent / spent; went
Exercise 3
1 a
2 b
3 a
4 b
5 a
6 a
Grammar, 1.2, page 129
Exercise 1
1 used to have
2 used to be
3 used to like
4 didn't use to invite
5 didn't use to go
6 used to listen
7 did you use to listen
8 used to enjoy
9 Did you use to go
10 used to take
Exercise 2
1 use to live
2 used to cost
3 didn't use to play
4 didn't use to sell
5 used to go
6 used to drink
7 used to cook
8 didn't use to win