Question

chuyển sang câu bị động

8 they couln`t open the door of the room

9 Lan`t parent have to clean up the house before tet holiday

10 they were making a big cake at 5pm yesterday

Answer 1

8. The door of the room couldn't be opened.

9. The house has to be cleaned up by Lan's parents before tet holiday.

10. A big cake was being made at 5 pm yesterday.

Answer 2

8, The door of the room couldn't be opened 

9, The house has to be cleaned up by Lan's parents before Tet holiday

10, A big cake was being made at 5 o.m yesterday