1.The children went straight home. (after/they/had finished/their classes)
2.The teacher came into the classroom. (by the time/the children/had taken/their seats)
3.We left the house. (after/the rain/had stopped)
4.You rang up. (when/the guests/had not come/yet)
5.You entered university. (after/you/had studied/English)
6.I came into the room. (by the time/the lecture/had begun)
7.The house was empty. (as everybody/had gone/to the party)
8.They went home. (after/they/had finished/their work)
9.I met you in the street. (after/you/had seen/a new film)
10.He couldn’t take part in the competition. (because/he/had broken/his arm)