1 Their dog is often taken for a walk
2 Luckily, my name wasn't called
3 The wall must be cleaned
5 A meeting will be held before May Day
7 My briefcase has been taken by the thief
8 The door of the room couldn't be opened
chuyển sang câu bị động :
1 They often take their dog for a walk
-> their dog is often taken for a walk
2 Luckily, they didn`t call my name
-> luckily, my name wasn't called
3. You must clean the walk
-> the walk must be cleaned
5 They will hold a meeting before May Day
a meeting will be held before May Day
6 Lan bought her brother some comic books
some comic books was bought for Lan's brother by her
7 The thief has taken my briefcase
my briefcase has been taken by the thief
8 They coulnd`t open the door of the room
the door of the room couldn't be opened
