11. Mr.John plays the guitar very ......... (good)
12. the problem of air .... in our city is worse and worse (POLLUTE)
13. tet is one of the most important ............ in Viet Nam (CELEBRATE)
14. hoa is ........... and kind so every one likes her (BEAUTY)
15. he is the best .......... in our group (SING)
16. my sister think that watching TV í time -.................... (consume)
17. you will get a good ........... at this school (aducate)
18. these hills are formed by............eruption (vocalno)
19, the new machine he bought last week works ................( effective)