Question 12. If everyone_________ for help, I will help his/her immediately. A. will ask B. asks C. ask D. asked Question 13. Our family ____________ the museum last Sunday. A. visits B. visited C. have visited D. visit Question 14. ________ computer is new, but _________ is quite old. A. Your My B.Mine-you C. Your Mine D. Yours Mine Question 15. I have ____ dog. _____ dog is very smart. A. a/a B. a/an C. the/a D. a/the Question 16. I joined an international karate_________. A. compete B. competitors C. competition D. competing Question 17. My mother can keep vegetables and meat in her ______ during a long time. A. helicopter B. modern fridge C. electric cooker D. spaceship Question 18. We should _______ plastic bags and paper. A. reuse B. reduce C. recycle D. All are correct