If, you, go, to, bed, late, ,, you, will, be, tired, in, the, morning, ., If, you, study, hard, ,, you, will, have, good, marks, ., If, it, rains, today, ,, I, will, stay, at, home, ., If, Peter, doesn't, take, his, umbrella, ,, he, will, get, wet, ., If, we, don't, hurry, up, ,, we, will, miss, the, bus, ..

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