#1. I went to Jane's house but she wasn't ___ home.
We use at to describe a position or location seen as a point, in this case “at home.”
#2. The boy swam ___ the other side of the river.
We use to when we are talking about movement in a direction, in this case “to the other side of the river.”
#3. Would you like to study ___ university?
We use at to describe a position or location seen as a point, in this case “at university.”
#4. I must go ___ the toilet.
We use to when we are talking about movement in a direction, in this case “to the toilet.”
#5. I was ___ work this morning.
We use at to describe a position or location seen as a point, in this case “at work.”
#6. Do you usually walk ___ work?
We use to when we are talking about movement in a direction, in this case “to work.”
#7. I'm going ___ the shop to buy some steak.
We use to when we are talking about movement in a direction, in this case “to the shop.”
#8. Will you be ___ home this afternoon?
We use at to describe a position or location seen as a point, in this case “at home.”
#9. How often do you go ___ the dentist?
We use to when we are talking about movement in a direction, in this case “to the dentist.”
#10. There were 5,000 people ___ the baseball game.
We use at to describe a position or location seen as a point, in this case “at the baseball game.”