Поставьте глаголы в скобках в Present Simple, Past Simple или во Future Simple. 1) Peter often (go) to the library. 2) My mother (not/cook) the dinner yesterday. 3) He (work) last month? 4) My friends (fly) to the USA next summer. 5) I think I (not/buy) this book tomorrow. 6) Peter (eat) an ice-cream all last week.