1.That exchange student can speak English and Spanish...............(fluent)
2.We are worried that the rivers and canals are becoming more and more...........(pollute)
3.It is that..................some people poach fish in Nhieu Loc Canals(dissappoint)
4.The ........................were dissapointed that people had spoiled the area.(enviromental)
5.That industrial country is seeking exploting...........................resources to satisfy its demand.(natural)
6.A complaint letter should be ended..................(polite).
7.charity activities/has/in this town/He/different/take part in/./
>He........................................................................................................
8.your family/You/the amount of water/uses/should reduce/./
>You.................................................................................................