Make up the sentences using the Passive Voice of modal verbs.

1. The homework /must / do.

2. The ball /can/ use/ in the gym.

3. The dishes /must/ wash.

4. The essay/ should/write.

5. The dog/should/ feed.

6. This question/could/discuss/yesterday.

7. The things/must/pack.

8. The documents/ couldn’t/sign/yesterday.

9. Mobile phones/can’t/use/during the lesson.

10. Loud music/shouldn’t/play/here.

1. The homework must be done.
Explanation: The active sentence is "You must do the homework." To convert it into the passive voice, "You" is omitted and "must" is changed to "must be". The object "the homework" becomes the subject in the passive voice.

2. The ball can be used in the gym.
Explanation: The active sentence is "You can use the ball in the gym." To form the passive voice, "You" is omitted and "can" is replaced with "can be". The object "the ball" becomes the subject in the passive voice.

3. The dishes must be washed.
Explanation: The active sentence is "You must wash the dishes." To change it into the passive voice, "You" is omitted and "must" becomes "must be". The object "the dishes" becomes the subject in the passive voice.

4. The essay should be written.
Explanation: The active sentence is "You should write the essay." To transform it into the passive voice, "You" is omitted and "should" is changed to "should be". The object "the essay" is now the subject in the passive voice.

5. The dog should be fed.
Explanation: The active sentence is "You should feed the dog." To convert it into the passive voice, "You" is omitted and "should" becomes "should be". The object "the dog" is now the subject in the passive voice.

6. This question could have been discussed yesterday.
Explanation: The active sentence is "We could have discussed this question yesterday." To form the passive voice, "We" is omitted and "could have" is changed to "could have been". The object "this question" becomes the subject in the passive voice.

7. The things must be packed.
Explanation: The active sentence is "You must pack the things." To change it into the passive voice, "You" is omitted and "must" becomes "must be". The object "the things" is now the subject in the passive voice.

8. The documents couldn't be signed yesterday.
Explanation: The active sentence is "We couldn't sign the documents yesterday." To transform it into the passive voice, "We" is omitted and "couldn't" becomes "couldn't be". The object "the documents" is now the subject in the passive voice.

9. Mobile phones can't be used during the lesson.
Explanation: The active sentence is "You can't use mobile phones during the lesson." To convert it into the passive voice, "You" is omitted and "can't" becomes "can't be". The object "mobile phones" is now the subject in the passive voice.

10. Loud music shouldn't be played here.
Explanation: The active sentence is "You shouldn't play loud music here." To form the passive voice, "You" is omitted and "shouldn't" becomes "shouldn't be". The object "loud music" is now the subject in the passive voice.