2.this pen had been bought before i went to bed last night

3.the dishes had been washed by nina when i called him 

4.a report had been written before my mother visited

5.sam's execise had been done by noon

6.the report hadn't been finished as soon as they came

7.this movie had been seen before  nina invited

8.after the house had been cleaned , i went to school

9.after  mark's clothes had been washed ,he studied

10.vicky's clothes had been ironed by noon

11.my teeth hadn't been brushed before i went to bed last night 

Mình không rõ ở đây yêu cầu rewrite như thế nào nhưng nếu đây là passive voice thì bạn làm như sau nhé

2.This pen had been bought before i went to bed last night

-> Cây bút này đã được mua trước khi tôi lên giường tối qua

3.The dishes had been washed by Nina when i called him 

-> Đống bát này đã được rửa bởi Nina khi tôi gọi cậu ấy

4.A report had been written before my mother visited

5.Sam's execise had been done by noon

6.The report hadn't been finished as soon as they came

7.This movie had been seen before  nina invited

8.After the house had been cleaned , i went to school

9.After  mark's clothes had been washed ,he studied

10.Vicky's clothes had been ironed by noon

11.My teeth hadn't been brushed before i went to bed last night