1. He just pointed a gun TO / AT / ON your head.

2. Pieces of bread were thrown AT / ON / TO us only once.

3. I explained FOR / TO / AT him how karma works.

4. Your task is to either shoot ON / AT / TO the robots or avoid them.

5. The doctor asked TO / — / FOR me to wait outside for a few minutes.

6. He began barking TO / AT / ON the dog and shouting TO / ON / AT it.

7. She sent him letters which he never replied AT / TO / ON.

8. This is the place I described FOR / AT / TO you.

9. You stare AT / ON / TO me during meals.

10. She thanked TO / FOR / — those who have stood with her.