I.Give the correct tense of the verbs in brackets to complete the sentences
1. If pollution increases, more and more trees (die)..........
2. We will go for a picnic if the weather (be)...........fine tomorrow
3. If I were you, I (travel).................around the world
4. Unless  it (rain).........., they will go shopping
5. He will be late if he (not hurry).................
6. I would take photos of UFOs if I (see)...................them
7. If water is polluted in the lake, the fish (die)...............
8. Our lives (destroy)....................if the earth didn't go round the sun
9. If he (study)..............hard, he could not fail the exam
10. If I (have)................enough money, I would buy a new computer
II. Put the correct forms of the verbs in brackets to make conditional sentences type II
1. If people (have)................four arms, life (be)..............easier
2. If my cat (can)..................open the fridge, it (eat).............all my food```````````````````````````````````````````````````
3. If Bill (be).............here, he (know)....................what to do
4. I (tell)......................you if I (know)..................the answer
5. If your boss (ask)...................you to work on Sunday,................you (do).........it?
6. What......................you(do)...............if you (read)......................people's thought?
III. Fill the blanks with the suitable words to complete the passage
Have you (1)...................burnt coal (2).............oil? Don't you know (3)................the burning (4).....oil and coal always release gases (5)................are harmful to humans (6).................day
Millions of tons of dust and chemicals from factories (7)..................... a lot of  phosphate fertilizers but noboday knows exactly how much hydrogen flouride in throws out into (8)................air every day. These make the environment become contaminated. (9)....................I were the Prime  Minister, I would make them limit the number of dangerous (10)..................to reduce pollution