1) If you ... water to 100 degrees Celsius, it boils. a) heat b) will heat 2) When you ... red and blue, you get purple. a) will mix b) mix 3) If you drop a ball, it ... to the ground. a) will fall b) falls 4) When it rains, the ground ... wet. a) will get b) gets 5) If you touch fire, you ... burned. a) get b) will get 6) When the sun ... down, it gets dark. a) will go b) goes 7) If you add 2 and 2, the answer ... 4. a) will be b) is 8) When you ... an apple, you can see the seeds. a) will cut b) cut 9) If it ..., I will take my umbrella. a) rains b) will rain 10) If I... hungry, I'll make a sandwich. a) will be b) am 11) If the sun ..., we'll go for a walk. a) shines b) will shine 12) If you... late, the bus will leave without you. a) are b) will be 13) If I have time, I... you later. a) call b) will call 14) If you study hard, you ... good grades. a) get b) will get 15) If the store is open, I ... some milk. a) will buy b) buy

Zero or first conditional?

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