Sắp xếp các câu thành bị động quá khứ hoàn thành

Sắp xếp các câu thành bị động quá khứ hoàn thành.
1) project / before / finished / the / had / been / the deadline.
2) lesson / clearly / the / had / been / explained / techer / the.
3) window / before / had / been / the / braken / we arrived.
4) the rain started / road / had / the / been / before / repaired.
5) guests came / had / been / before / ccleaned / the room / the.
6) letters / three / before lunch / written / had / been.
7) the thief / had / been / before midnight / arrested.
8) completed / all the exercises / before / had / been / the bell rang.
9) the festival / the house / had / been / painted / before.
10) the customers arrived / the / before / meal / prepared / had / been.