Cấu tạo của tuyến tụy.

1. Your electricity bill can be greatly ________ by using low-energy heaters (complain)

2. I'm very _______ because they use electricity to catch fish (worry)

3. I am ________ disappointed to know my children haven't cleaned up all the trash (extreme)

4. __________ are interested in the protection of the enviroment (conserve)

5. Speaking in the public seems to come quite __________ to her (nature)

6. __________ encourage people to use products which ________ friendly (govermental/enviroment)

7. Consumers don't want products that will save money but work ______ (affect)