Вычеркните лишнее. choose the odd one out. 1)if i were you, i would help him. 2) if i lived at the seaside, i would swim every day. 3) when water boils,it turns into steam. 4) they would be happy,if you gave them some advice.

3) When water boils,it turns into steam. Лишнее,т:к это Zero Conditional
Все остальные предложения относятся к Second Conditional