5. What a nice house you have! - Nam: Really? ____________________ A. That's nice of you to say so. B. Sorry, please C. No, thanks D. I’m sorry. I can’t. 6. There are a lot of technological ___________ designed to save energy. A. limitations B. innovations C. consumption D. necessities. 7. If you want to know her telephone number, you can ____ it ____ in the phone book. A. look / over B. look / into C. look / out D. look / up 8. I suggest that all of you ______ hard for the coming exam. A. working B. to work C. should work D. can work 9. Steven got the mechanic ________ his car yesterday. A. to repair B. repair C. repaired D. repairing 10. “_________________” – “Not a bad idea.” A. Do you mind going by bus? B. Won’t you go by bus? C. Would you like to go by bus? D. What about going by bus? 11. Her mother took her to the zoo _____ showed her some rare animals. A. but B. or C. because D. and 12. Using public transport is a good way to _____ traffic jams and air pollution. A. produce B. reduce C. increase D. cancel 13. In summer, air conditioning accounts _______ 50% of our electric bill. A. for B. of C. from D. to 14. The ______ in the pipes made water leak and we had to pay for the water. A. break B. holes C. cut D. cracks