Amazing Facts (Zero Conditional)
1 If we feel tired, we yawn (yawn/would yawn). 2 If we heat water, it ______ (boils/would boil). 3 If we throw something into the air, it. (fall/falls).
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1 If we feel tired, we yawn (yawn/would yawn). 2 If we heat water, it ______ (boils/would boil). 3 If we throw something into the air, it. (fall/falls).
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