Change the following sentences into the passive voice.
1 You must wash your hands.
2. They ought to knock down the old building.
3. You needn’t type that report today.
4. Nobody has used this room for ages.
5. No one can solve that problem.
Change the following sentences into the passive voice. 1 You must wash your hands. 2. They ought to knock down the old building. 3. You needn’t type
By Ruby
`1` . Your hands must be washed.
`->` Bị động của must : must/mustn’t be done
`2` . The old building ought to be knocked down.
`->` Bị động của ought to : ought to be Pii
`3` . That report needn’t be typed today.
`->` bị động của needn’t : needn’t be Pii
`4` . This room hasn’t been used for ages.
`->` Bị động hiện tại hoàn thành : have/has + (not) + been Pii
`5` . That problem can’t be solved
`->` Bị động của “can” : can/can’t be Pii