Помогите пожалуйста!!! Очень надо !!!
Напишите свой вариант, используя правильные формы
1 Look! I (buy) a new book! Do you want to read it?
2 Before he (go) for a walk, he (clean) his room and (help) his sister.
3 Yesterday I did a lot of things. First, I (go) to school, then (meet) with my friends and finally (swim) in the swimming pool.
4 He watched them (enter) the room
5 Butter (make) from milk.

1. have bought

2. went, had cleaned and helped

3. went, met, swam

4. enter

5. is made