- Your / You're: Your bike. You're great!
- Their / They're Their book. They're wonderful.
-Whose/ Who's Whose book is that? Who's there?
- Where/ We're/were Where were you?
- to / too I go to the shop. I go too.
- then / than Then we went to the shop. Greater than...
- less / fewer: I spent less time on my phone.
I've read fewer books than my brother.