1. Kristine___(be) to an opera before last night
2. The fridge was empty. Someone (just/eat)___all the food.
3. nobody is at home because everybody___(already/go) out for dinner.
4. When i___(arrive) at his house last night. nobody___ (be) at home because they _____(already/go) out for dinner
5. He missed the train. It____(already/leave)
6. Until last night, i (recognize)____how much i loved her
7. Yesterday i met. i (not see)___ him for 5 days
8. Karen didn't want to eat salmon. she (eat)____that dish several times before
9. That is the biggest snake i____(ever see)
10. this is the first time i (see)__a snake. it's really scared