Choose the correct word

Choose the correct word:
1. I’m meeting Andy at/ on the cinema in an hour.
2. Have you seen the new building at/ in front of the school? 
3. My new job starts in/ on the first day of August. 
4. We’re going to Martin’s to see their new baby in/on Wednesday evening. 
5. See if there are any tomatoes at/in the fridge, will you? 
6. We’ll all have computers connected to our brains at/in the future. 
7. I don’t feel like playing chess at/ on the moment. 
8. I think there’s someone at /in the door. I’ll go and check.