3) Our children and grandchildren will suffer if we don't look after our planet.
4) If you are late, I will go without you.
5) If she passes her driving test, she will buy a car.
7) If my neighbours don't stop making a noise, I will complain.
8) If I am late for work, my chief will be angry
9) A person doesn't eat meat if he/she is a vegetarian.
10) If I get up early, my father will drive me to school (Если я ВСТАНУ рано - тут про будущее)
If I get up early, my father drives me to school (Если я ВСТАЮ - тут постоянное действие, то есть → Когда бы я ни встал, если я встал рано, то папа меня отвезет в школу.)
11) Everything is wet if it rains.