chuyển sang câu bị động
1) We must keep this talk secret
2) We shouldn't warn the director of this risk
3) You mustn't leave this door open under any circumstances
4) We can understand this question without any difficulty
5) You should change the battery of the remote control
6) We must wash this kind of cloth in warm water only
7) We ought to deal with the problem before people talk about it
8) You mustn't touch this button while the experiment is in progress
9) Can they repair the machine in two days
10) They couldn't find the man anywhere
1.This talk secret must be kept
2.The director of this risk shouldn't be warned
3.This door open under any circumstance mustn't be left
4.This question can be understood without any difficulty
5.The battery of the remote control should be changed
6.This kind of cloth must be washed in warm water only
7.The problem ought to be doled before it is talked about
8.This button mustn't be touched while...
9.Can the machine repaired in two days?
10.The man couldn't be found anywhere
