Choose the correct form of the verb.

1. She … Nick before they met at school.

a) didn't see b) wasn't seeing c) hadn't seen

2. When my dad came home, the children … the lunch.

a) ate b) were eating c) had eaten

1. The letter … some minutes after she had left.

a) came b) was coming c) had come

2. While they … the road the car crash happened.

a) crossed b) were crossing c) had crossed