Ex 1. 1. If you eat too much, you (gain) will gain weight. 2. What would you do if you (win) won the lottery? 3. If you (study) studied harder, you would get better grades. 4. If your friend (call) calls you, will you answer the phone? 5. If you (not wear) don't wear a helmet, you might get injured while biking. Ex 2. 1. What (happen) would happen if the electricity (go) went out? 2. You (pass) would pass the exam if you (study) studied harder. 3. If they (not arrive) don't arrive on time, we (start) will start without them. 4. She (get) would get a promotion if she (work) worked harder. 5. If the weather (improve) improves, we can go for a hike this weekend.