True or False? (in/on/at)

True or False? (in/on/at)
1. We first visited China on 2006 
2. My birthday is at the second of July. 
3. Let’s meet on five o’clock, shall we? 
4. School starts again in September. 
5. There’s a party at Emily’s at Saturday. 
6. What do you want to do on the morning? 
7. Let’s go and see Grandma on Easter. 
8. Where do you usually go in Christmas Day?