Ex. 2
1. I opened the door and looked inside. 2. Who closed all the windows? 3. I carried my mom's shopping bags. 4. I didn't climb over the fence. 5. I ripped my shirt. 6. The plane landed ten minutes ago. 7. Ali cut his knee. 8. The glass fell off the table. 9. The glass didn't break. 10. We sold our old car. 11. We bought a new car. 12. The bell didn't ring. 13. We all went into school. 14. The dog caught the ball.
Ex. 3
1. He didn't come to school after the first lesson yesterday. 2. I didn't spend last summer in the village. 3. He didn't return home yesterday. 4. I didn't get two good marks in English two days ago. 5. The children didn't study English two hours ago.
Ex. 4
1. When did you get up in the morning? - I got up at 7 in the morning.
2. What did you have for dinner last night? - I had fish and rice for dinner last night.
3. When did you travel by train last time? - I travelled by train three months ago.
4. What did you do last Sunday? - I played computer games last Sunday.
5. Where did you go last summer? - I went to Paris last summer.
6. When did you visit an art gallery last time? - I visited an art gallery six months ago.
7. How did you go to work on Monday? - I went to work by car on Monday.
1) Technologists said that ash from waste combustion had to be sent to specially designed landfills.
2) А parliamentary committee made public statement that radioactive waste had been thrown into the sea by some old British nuclear power stations.
3) The placard demanded that solutions were to be found to traffic jams and air pollution in the city.
4) Ecologists asked the local authorities how much sulphur dioxide (SO2) the old power station in Yorkshire gave off.
5) The mayor says that the construction of a smart city on this island will not be cheap.