They must obey the rules. (Affirmative to Negative ) | They must obey the rules. Negative Sentence

Affirmative: They must obey the rules. (Make it a negative sentence)

Negative: They cannot but obey the rules.

Read Extra Topic: 

Make 20 sentences with the word (Who):

1. Tell us more.
2. There is more.
3. I need more.
4. Show me more.
5. I can do more. 
6. I deserve more.
7. I need one more.
8. Do you want more?
9. Try it once more.
10. I need more space.
11. I'll get you more.
12. I can't agree more.
13. Let's try once more.
14. Can we get some more? 
15. I know I can do more.
16. Do you need more time?
17. I couldn't agree more.
18. Just one more, please.
19. Could you tell us more?
20. I'll ask you once more.

Read More: 

A child likes only sweets (Negative Sentence)