1) If you touch a cactus, it hurts. a) zero b) first 2) If we miss the train, we’ll be late. a) zero b) first 3) If you mix red and blue, you get purple. a) zero b) first 4) If I see Maria, I’ll give her the book. a) zero b) first 5) If you don’t drink water, you get dehydrated. a) zero b) first 6) If it doesn’t snow, we won’t ski. a) zero b) first 7) If you heat water to 100°C, it boils a) zero b) first 8) If I don’t leave now, I’ll be late. a) zero b) first 9) If you leave food out, it goes bad. a) zero b) first 10) If he studies hard, he will succeed. a) zero b) first

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