16. Correct each sentence. .
1. May I give you piece of advice?
2. Who gave you these advice?
3. What a useful advice!
4. I have never heard such a useless advice. 5. The teacher gave me three advice.
6. She followed your advice, did she?
7. Shall we follow those advice?
8. You must take his advise.
9. He always take my advice.
10. That's a very good advice. 11. Nobody like to get advice.