Окончите предложени, раскрыв скобки1.When the bell rang the children (to run)

Окончите предложени, раскрыв скобки
1.When the bell rang the children (to run) into the classroom and (to take) their seats.
2. When I opened the door, the lesson (to begin) and the teacher (to explain) something to the class
3.Before we (to take) the boy to the theatre he (never to see) a play.
4.I (to clean) the carper when the dog (to come) and (to shake) himself
5.By the time we (to arrive) the party (to finish)
6.-When you (to do) when I (to call) you?- I ( to cook)