6. In the end, Little Pea lived happy / happily with the prince.
7. If you study harder, you can easy / easily pass the examination.
8. Fruits and vegetables in big cities are extreme / extremely expensive.
9. The boy made his father angry / angrily because of his carelessness
10. Mary has a nice / nicely smile. She smiles in a very attractive/attractively
11. Oh, Mai looks more beautiful / beautifully in her new dress.
12. Most of the teachers in my school are good / well - qualified.
13. My children were watching a very interesting / interestingly cartoon
14. Lucky / luckily, he wasn't injured in the accident.
15. It is difficult / difficultly to solve these pollution problems.