1. A balanced diet is very good ______ your health. A. in B. for C. with D. at 12. I am looking forward _____________ you again. A. to seeing B. to see C. seeing D. see 13. Jack and Peter are playing basketball and ________ is Tom. A. so B. neither C. either D. too 14. My brother didn’t clean the floor last night but I __________. A. do B. didn’t C. did D. don’t 15. Remember to ____________ the lights before going to bed. A. turn B. turn off C. turn on D. stop 16. It is a good idea to use ____________ when travelling long distances. A. cars B. taxis C. private cars D. public transport 17. What should we do to ____________ electricity? A. cut B. take C. save D. waste 18. We shout use _____________ light bulbs in our homes. A. low energy B. little energy C. a bit energy D. efficient 19. In my opinion, nuclear power is not only expensive but also _________ to our environment. A. danger B. dangerous C. risk D. disaster