Here are the correct forms of the words in brackets:

1. Ask the **librarian** if you want to borrow books here. (Library)
2. That **musician** plays a lot of instruments. (Music)
3. Lan’s brother is a **pianist**. He plays it very well. (Piano)
4. If the engine goes wrong, tell the **engineer**. (Engine)
5. My brother is a **student** at Vietnam National University in Hanoi. (Study)
6. Phone the **electrician** if the lights don’t work. (Electric)
7. He is a **journalist**. He travels a lot. (Journal)
8. Nam, you will be an **artist**. (Art)
9. Where is the **nearest** post office from here? (Near)