Rewrite the sentences in the passive voice form: (Modal verbs): We must wash this kind of cloth in warm water only

II. Rewrite the sentences in the passive voice form: (Modal verbs)
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. ................................................................................................................................................. 
 III. Change these sentences into passive form.  
11. I will shut the door if you like.  → …………………………………………………………………………………………….
12. The teacher won’t correct exercises tomorrow.  → …………………………………………………………………………………………….
13. He can’t repair my bike.  → …………………………………………………………………………………………….
14. When did you see him in that bank? → ……………………………………………………………………………………………. 15. She read the letter again and again last night.  → …………………………………………………………………………………………….
16. You must do this exercise carefully. → ……………………………………………………………………………………………. 17. We can solve the problem. → …………………………………………………………………………………………….
18. People should stop experiments on animals. → …………………………………………………………………………………………….
19. She can sew 3 shirts a day.      → …………………………………………………………………………………………….
20. Visitors must leave umbrellas in the cloakroom.  → …………………………………………………………………………………………….