1) is doing his homework
2) does his homework
3) are working
4) work
5) cried
6) cries
7) play the piano
8) am playing
9) can go to the park
<span>Last Thursday
we (1) went to the country. We (2) left the house very early, (3) got
into the car and (4) drove away. The weather (5) was sunny but windy. Soon we (6) were <span>near
our grandparents’ farm. My granny (7) hugged us and (8) showed us her
beautiful flowers that (9) grew in her garden. We (10) had a wonderful
afternoon on the farm and (11) spent a lot of happy hours there.</span></span>
1) What is the process of making air, land and water dangerously dirty?
2) What is the industrial revolution?
3) Did industrialization bring people into conflict with nature?
4) What is the gas that cars produce?
5) Where is the air polluted most of all?
6) Why do fish die?
7) What are rivers and seas filled with?
Ex. A
Swap, switch, cut, unplug, recycle, take, use, <span>wash.
ex. B
2. use 3. unplug 4. wash 5. recycle 6. swap 7. switch 8. take</span>
1) He has to do the washing up.
2) They have to wake up early.
3) We don't have a uniform to wear.
4) You needn't make your bed.
5) She doesn't have the flat to clean.