Помогите пожалуйста Zero conditional - exercise 2 Exercise 2 Complete the sentences...

Помогите пожалуйста Zero conditional - exercise 2 Exercise 2 Complete the sentences with verbs in brackets. Peter, what do you do if your parents are at home? 1) If my parents .................. at home at weekends, I have to help with housework. (stay) 2) If my mother .................. at home, I do the washing up or hoovering. (be) 3) If she .................. at home, I wash the car or work in the garden with my dad. (not be) 4) If they .................. at home on weekdays, I do my homework first and then go out. (be) 5) If my father .................................. in the evening, we play games on his computer. (not work) And what do you and your sister do if your parents are not at home? 6) We ............................... the housework if they leave the house. (not do) 7) I just .............. in bed if there is nothing to watch on TV. (lie) 8) Or I ................ with my friends on Skype if they feel like chatting. (chat) 9) My little sister usually .................. with her best friend if she comes to our place. (play) 10) But she ................................ what to do if her friend can't come. (not know)