Choose the best answer to fill in the blank. 23. If I have a terrible headache, I ________ some medicines. A. will take B. take C. would take D. can take 24. ________ you count from one to ten when you________ two? A. Could/were B. Would/ were C. Could/ are D. Can/ are 25. Is there any________ in the bin?- Yes, there are some. A. cups B. spoons C. rubbish D. plates 26. If people use________ paper, they can save a lot of trees. A. less B. more C. much D. fewer 27. If he________ much time, he will watch TV more. A. having B. have C. has D. had 28. If there is wastepaper bin in each class, the class will be________ . A. cleaner B. dirtier C. lighter D. darker 29. There are many ways to________ pollution. A. increase B. reduce C. clear D. protect 30. I might buy a smart phone________ the Internet. A. to surf B. surf C. surfing D. surfed 31. ________ happens when water in lakes, rivers and oceans is polluted. A. Water pollution B. Air pollution C. Food pollution D. Soil pollution 32. I________ a new cat since yesterday. A. have bought B. bought C. will buy D. have buy 33. A robot won't be able to________ of babies. A. take B. take care C. care D. take note 34. High buildings are also called________ . A. high house B. tall office C. skyscrapers D. tall houses 35. You can take these plastic bottles to the factory to________ them. A. reduce B. reuse C. recycle D. redo 36. If you have a smart watch, you can________ your friends in other countries. A. say B. contact C. talk D. speak 37. Things you throw away because you don't need them are called________ . A. environment B. rubbish C. papers D. bin 38. If we protect our environment, we will________ . A. buy our world B. save our world C. damage our world D. destroy our world 39. Robots will be able to work harder and longer than people ________ getting tired and complaining. A. so B. with C. but D. without 40. We can save a lot of________ if we remember to turn off all the electric appliances when we go out. A. electric B. electrical C. electrician D. electricity 41. Have you ever________ on a spaceship on the Moon? A. travelled B. travelling C. travel D. to travel