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