BÀI 1:
1.she had gone .
2.it had changed a lot of .
3. she had arranged to do something .
4. the film had already begun .
5. I hadnot seen him for five years .
6. She had just had breakfast .
BÀI 2:
2. I 'd never seen her before .
3. he'd never played tennis before .
4. we'd never been there before .
BÀI 3:
1. had called the police
2. there had been / had gone
3 .he had just come back from the holiday / he had looked
4 . had got a phone call / had been /had sent her /had never reliped to them
BÀI 4:
2. had gone
3. had gone
4. had broken
5. saw /broke / had stopped
