Part IV. Put the verbs in brackets into the correct tense or form. 1. If we____(not stop) cutting down so many trees, we’ll endanger our oxygen supply. 2. Last year Mr. Johnson (teach) us Robotics. 3. My sister is really busy - she (study) for the exam. 4. In the future, robots (do) things that people can’t do or don’t want to do. 5. Mark (be) to Sa Pa twice. The first time (be) more than ten years ago. 6. How often (you/ do) household chores? ~ Every day. 7. Twenty years ago, most people around the world _____(not know) what the Internet was. 8. If we dump all sorts of chemicals into rivers, we (not be able to) swim in them in the future. Part V. Choose the word which best fits each gap. “Eco-friendly houses” How ‘eco-friendly’ is your house? Here are some things that you can do to protect the environment and make the world a better place. ♦ Turn (1) the lights when you are not in a room and don’t leave computers and TVs on standby. ♦ Turn down the heating. If you’re cold, you can put on a jumper! ♦ Put solar panels on the roof. Using energy from the (2) can save a lot of money and electricity. ♦ Don’t keep the (3) running when you brush your teeth or wash vegetables. ♦ Don’t (4) away things you don’t want anymore. Remember the three Rs -reuse, reduce and recycle. ♦ Grow your own vegetables in your garden - it’s eco-friendly and (5) . Saving the planet starts at home and it could start as (6) as you get home today! 1. a. on b. off c. up d. down 2. a. coal b. wind c. water d. sun 3. a. tap b. pipe c. knob d. bin 4. a. bring b. give c. throw d. turn 5. a. modern b. healthy c. useful d. polluting 6. a. long b. much c. good d. soon Part VI. Complete the second sentence so that it has the same meaning to the first one. Use the word in brackets. 1. What are your plans for the weekend? (do) What 2. Peter knew how to skate when he was 12. (could) Peter 3. Robots are not as intelligent as humans, (than) Humans Part VII. Write sentences, using the words or phrases given. 1. Robots/ the future/ be/ able/ talk/ humans? _____________________ 2. You/ create/ more rubbish/ if/ you/ not recycle/ glass and bottles. _____________________ 3.Reusable bags/ better/ plastic bags/ because/ they/ made/ natural materials _____________________