47. My parents might buy an __________ dishwasher tomorrow. A. comfortable B. automatic C. hi-tech D. cable 48. In the future, I will live in a _________ so that I can travel anywhere I want. A. skyscraper B. palace C. motorhome D. houseboat 49. She might have a _________ to help her do the housework in the future. A. fridge B. dishwasher C. washing machine D. robot 50. My aunt lives in a little_________ in the countryside. A. palace B. cottage C. skyscraper D. castle 51. Nam usually goes ________ after school. A. to fishing B. home C. the cinema D. house 52. I’m going to the ________now. I want to buy some bread. A. post office B. drugstore C. bakery D. toystore 53. People should _________ noise. A. reuse B. reduce C. recycle D. All are correct 54. _________can be recycled. A. Plastic bottles B. Glasses C. Clothes D. A and B are correct 55. My older sister often __________ old envelopes to decorate her room. A. reuses B. reduces C. recycles D. All are correct 56. We shouldn't use __________ to store food, let's use bags made of natural materials. A. plastic bottles B. can C. paper bags D. plastic bags 57. Lan always __________ books and clothes with her friends and cousins. A. swaps B. exchanges C. wraps D. A and B are correct 58. You should put used cans and glass bottles into __________. A. garden B. recycling bins C. organic green bins D. All are correct 59. We should use ___________ plastic boxes or bottles because they are good for health and safe for the environment. A. reusable B. refillable C. recyclable D. All are correct 60. Soil pollution _________ many bad effects on ecosystems and human life. A. does B. causes C. makes D. All are correct 61. Many plants and animals die because of __________. A. noise pollution B. environment C. deforestation D. A and B are correct 62. The air in this city is __________ by emissions from nearby factories. A. exchanged B. reduced C. polluted D. All are correct 63. The _____ of water pollution is the death of many types of fishes. A. cause B. effect C. reason D. solution 64. Rising sea level can make some cities __________. A. pollute B. exchange C. appear D. disappear 65. Protecting the __________environment is saving human life. A. natural B. polluted C. working D. All are correct 66. Do you think future robots will be able to do ____________ things? A. beautiful B. complicated C. small D. minor 67. He sometimes helps his grandfather do the _____________ such as watering flowers and planting trees. A. washing B. laundry C. gardening D. shopping 68. Some people say that robots will play a ____________ role in the future because they will not be able to do complicated things. A. minor B. important C. necessary D. major 69. Future robots will be able to ____________ our faces and give suitable responses. A. know B. recognize C. access D. get 70. In the future, we might not have to do the _____________ because home robots will be able to help us do that. A. wash B. clothes C. laundry D. shopping 71. In the robotic competition, some robots can ____________ heavy things. A. buy B. lift C. sit D. work 72. My father is cutting the ____________ of my grandparents' house. A. hedge B. dishes C. trees D. animals 73. People can use robots to build ______________ on other planets. A. gardens B. space stations C. palaces D. buildings