II

1. alan had finished the report before his boss asked to see it 

2. we had lived in HN for 10 years before we moved home

3. he hasn't been able to eat dinner before his wife came 

4. she advised me to see the doctor as soon as possible

5. she always enjoys talking to her grandfather. he always tells great stories

6. we have our car serviced and seem there is a problem with engine

7. scientists tries to work out a way to reduce pollution aircraft 

8. my sister will be visiting china this time next month 

9. if i were your father, i would not allow you to go on at night 

10. if we save water, other people will have fresh water to use