Formal vs Informal Register

English (B1) — Formal vs Informal Register: 25 practice questions with instant scoring and explanations.

1. Which is more formal? 'Hi!' or 'Good morning'?
2. Which sentence is more informal? 'Could you help me?' or 'Help me out, will ya?'
3. In a formal letter, you would write: 'I _____ to inform you...'
4. Which greeting is most appropriate for a business email?
5. Which is more formal? 'Thanks a lot' or 'Thank you'?
6. In informal speech, you might say 'I _____ no idea.' (Informal)
7. Which sentence is more formal?
8. Which is appropriate for a professional meeting?
9. In informal email, you write '_____ you soon' instead of 'Looking forward to hearing from you.'
10. Which closing is most formal for a letter?
11. Which sentence uses formal language?
12. In formal writing, you would avoid using _____.
13. Which is more formal? 'Give me the file' or 'Could you please provide the file?'
14. Which phrase is informal?
15. In a formal report, you would write '_____ is evident' instead of 'It's clear.'
16. Which is a formal way to express disagreement?
17. Which greeting is appropriate for a formal business context?
18. In informal speech, you might say 'I'll _____ out the details later.' (Informal)
19. Which is more formal? 'About the meeting' or 'Regarding the meeting'?
20. In a formal email, you would use '_____ to confirm...'
21. Which sentence is appropriate for a formal presentation?
22. In informal speech, you contract 'cannot' to _____.
23. Which is the most formal way to express a request?
24. In a formal document, you avoid using _____.
25. Which closing is appropriate for an informal email to a friend?