Ex 2: Put the verbs in the correct forms
1. If they (be) _________ students, they must wear uniform.
2. If we keep on using more and more motor vehicles, we (run out)__________ of oil.
3. We (not buy) ___________ this car if it is expensive.
4. We can’t play soccer well if it (rain)________ heavily.
5. She (be) _________ free tomorrow if she finishes all the homework.
6. If we (not take) _______ a map, we will lose our way.
7. If you throw trash everywhere, the environment (be) ________seriously polluted.
8. If she (not have) _________a bike, she can’t go on a picnic.
9. If he is absent now, He (not know) _________ what to do.
10. If the test is easy, I (do) _______ it in 10 minutes.