1. at what time can i pick you out/up?
2. tim is responsible for/to booking the concert tickets.
3. we ordered delicious dishes in a restaurant, but liz was picking on/at her food.
4. mike is new to our class, that's why everyone is always picking him on/at.
5. excuse me! can u help me pick out/in a tie matches my shirt?
6. mr barnes has been working in/for mckinsey company for 17 years.