1) ¿La estructura del condicional cero es: Yes/If + present simple, + then + Present simple? a) yes b) no 2) El presente simple en el condional cero se pone tanto en resultado como en la condición a) yes b) no 3) After work, Kelly often does housework if she ..... too tired a) be b) aren´t c) won´t be d) isn´t 4) If you heat water to 100 degrees, it ... a) boiled b) boling c) boil d) boils 5) Mabel doesn't rest if she... a) doesn't sleep b) don't sleep c) no doesn't sleep

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