Ex3: Complete using the correct form of the verbs in brackets.
1. I'd have got you a present if I __________________ (know) it was your birthday.
2. We__________________ (not/get) lost if we'd taken a map with us.
3. If the car__________________ (not/break down), I wouldn't have been late.
4. If I (feel) ________________ better now, I (go) _________________ to the cinema
with you.
5. If you (go) _______________ by bike more often, you (be / not) ________________
so flabby.
6. The river (freeze) __________________ if it (be) __________________ very cold.
7. If we (throw) ____________ a ball against a wall, it (bounce) _____________ back.
8. If you smoke, your skin (age) __________________ more quickly.
9. If you pour oil into water, it (float) __________________
10. Water evaporates if you (boil) __________________ it.