4. Each sentence has a mistake. Rewrite the sentence correctly. 1. She is the girl which sings in a band. 2. This is the park who we go skateboarding. 3. I met a man when hobby is fencing. 4. Yesterday was the day which we started painting class. 5. That's the reason where I love ice-skating. 6. That's the book who won a writing competition.

Rewritten sentences:

• 1. She is the girl who sings in a band. (Use 'who' for people).
• 2. This is the park where we go skateboarding. (Use 'where' for places).
• 3. I met a man whose hobby is fencing. (Use 'whose' to show possession).
• 4. Yesterday was the day on which we started painting class. (Use 'on which' for a specific day).
• 5. That's the reason why I love ice-skating. (Use 'why' after 'reason').
• 6. That's the book that won a writing competition. (Use 'that' for things, or omit it).

Answers:

1. She is the girl who sings in a band.
2. This is the park where we go skateboarding.
3. I met a man whose hobby is fencing.
4. Yesterday was the day on which we started painting class.
5. That's the reason why I love ice-skating.
6. That's the book that won a writing competition.