Matching Pairs Zero conditionalOnline version The zero conditional usage by Sandra Dias 1 If you press the button, 2 If you heat water to 100 degrees Celsius, 3 If you heat water, 4 If you prefer, 5 If you want to come, 6 Does ice melt 7 If you don't pay attention, 8 My boss gets angry, 9 Fish die if 10 If you touch the motorcycle, the machine starts to work. it evaporates. they stay out of water. call me before 5:00 p.m. I can take a cab. you cut yourself with a knife. the alarm goes off. if I am late for work. it boils. if you heat it?