Chuyển những câu sau thành câu bị động
1. My father reads books every day. ->
2.I buy this pencil case.->
3.Do you feed the dog? ->
4.Tommy eats sandwiches.->
5.He does his exercises every afternoon. ->
6. Sam cleans the floor twice a day. ->
7.We eat a chocolate cake. ->
8.They sell this house. ->