Свременами 1)the children (to open) the book when the teacher ( to come) 2)ann (to study) english before she ( to enter) the institute 3) when tom ( to read ) book, he ( to know) a lot of ineresting things 4)mother (to cook) dinner before the children ( to come) home 5) lena ( to go) to school before her father ( to do ) his tas 6) bob (to write) the letter before he (to go) to bed 7)father ( to do) his work before the children ( to get) up. 8) tom ( to eat) an ice-cream before his mother ( to cook) dinner 9) i (to read) the book before he ( to come) home
to study enter