1. When Airi at school, she realized she her textbook.
a. had arrived, fotgot b. arrrived, had forgotten
c. forgot, had arrived d. had forgotten, arrived

2. When I the new teacher, I was so surprised. I his class before!
a. met, had taken b. had met, took
c. had taken, met d. took, had met

3. Pedro sushi before he to Japan.
a. never ate, had come b. come, had never eaten
c. had come, never ate d. had never eaten, came