13. Maryam was impressed by the ________________ of Vietnamese people. (hospitable)
14. There are ________________ ways of solving the problems. (variety)
15. She shows people how to _________________ the environment. (protective)
16. These products are ________________ cheap. (surprise)
17. Your new dress _______________ you very much. (suitable)
18. Sa Pa is a famous _______________ resort in Viet Nam. (mountain)