Complete the sentences opening the brackets. 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)by the time we (to arrive)the party(to finish). 5)-what you (to do)when i (to call)you? - i (to cook). 6)when i (to get )to the playground my friend already(to leave). 7)we (to have)a good long holiday after we(to do)all the work.

When the bell rang the children ( ran) into the classroom and (took) )their seats.2)When I opened the door, the lesson (had begun)and the teacher (was explaining) something to the class.3)Before we (took) the boy to the theatre he (had never seen)a play.4)By the time we (arrived)the party(had finished). 5)-What were you (doing) when I (called) you? - I (was cooking). 6)When I (got )to the playground my friend had already(left). 7)We (had)a good long holiday after we(had done)all the work.