1. If someone into the store, smile and say, “May I help you?” A. comes B. came C. will come D. would come 2. If you all of my questions, I anything to help you. A. don’t answer / can’t do B. didn’t answer/ won’t do C. wouldn’t answer/ can’t do D. wouldn’t answer/ couldn’t do 3. “Here’s my phone number.” - “Thanks, I you a call if I some help.” A. will give / will need B. would give/ needed C. give/ need D. will give/ need 4. The teacher was absent today, so the class was canceled. If she absent again tomorrow, class tomorrow, too. A. is / will cancel B. is/ will be canceled C. was / would be canceled D. was/ would cancel 5. I won’t lend you this money you promise to pay it back. A. in case B. if C. otherwise D. unless 6. there are some more ideas, we can end the meeting now. A. Unless B. If C. As if D. In case 7. “It’s really raining.” “Yes. If the weather , we’ll have to camp somewhere else. A. would get worse B. might get worse C. gets worse D. should get worse 8. If anyone , him I back at 9 o’clock. A. calls / tell / will be B. called / telling / would be C. is calling / tells / am D. will call / to tell / am 9. If she asks for money, I her. A. will give B. gave C. would give D. would have given 10. If I this exam, I’ll go to the university next summer. A. pass B. to pass C. had passed D. passed 11. more information, please telephone our main office. A. If you will need B. Should you need C. You should need D. If you needed 12. If Jack refuses to help, we manage without him. A. have to B. will have to C. had to D. are having to 13. I cannot buy a new computer I save enough money. A. if B. even if C. unless D. as if 14. You will get a good seat if you first. A. come B. came C. have come D. will come 15. We’ll be late unless we now. A. leave B. don’t leave C. had left D. have left 16. We can reuse . A. water B. air C. noise D. bottles 17. What does “reduce” mean? A. using something again B. using something more C. using something less D. collect something 18. What does “reuse” mean? A. using something again B. using something more C. using something less D. collect something 19. We shouldn’t rubbish on the street. A. throw B. reuse C. wrap D. turn off 20. Polluted water can make fish . A. live B. sleep C. grow D. die 21. We can use empty to make pencil boxes. A. paper B. bottles C. bulbs D. plastic bag 22. Turn the lights when we go out. A. of B. off C. on D. up 23. People should stop using so energy. A. more B. less C. many D. much 24. Planting more to reduce pollution. A. does B. flowers C. trees D. grass 25. means giving things to people in need. A. Swap B. Charity C. Reuse D. Recycle