1, The new bridge was being built when we came by the builders 

2, The shop will be opened tomorrow

3, That book was written by a famous writer

4, The bill won't be paid 

5, This house was built in 1990

6, The room is cleaned every day

7, Mary's dog was killed by a lion last week

8, Are his exercises done carefully

Study well

 1.The builders were building the new bridge when we came.

→The new bridge wew being built by the builders when we came.

  2.He will open the shop tomorrow.

→ The shop will be opened by he tomorrow.

  3.A famous writer wrote that book.

→ That book was written by a famous writer.

  4.Jack won't pay the bill.

→ The bill won't be paid be Jack.

  5.Someone built this house in 1990.

→ This house was built by someone in 1990.

  6.My sister cleans the room everyday.

→ The room is cleaned by my sister everyday.

  7.A lion killed Mary's dog last week.

→ Marry's dog was killed by a lion last week.

  8.Does Tom always do his exercises carefully?

→Are Tom's excercises always done by he carefully?

         Chúc bạn học tốt~~