1. she asked me if i could carry her heavy bag
3. the mother told her son not to cry
4. there used to have a lot of flowers in front of my house
5. mr pike isn't healthy enough to travel around the world
6. tom's mother said that he should go to bed early
7. i've known him since last year
8. lan enjoys playing badminton
9. mai asked hoa to help her with her exercise
10. he is not old enough to go to school
11. we have lived here for 15 years