Put and verb into the Past Simple and one into the Past Continuos in the sentence.
1. He ___ (revise) for his Special Psyhology exam when you___ (call)
2.I'm sorry, I ___(not/hear) what you said. I ___(read) the article about Van Riper, a famous American Speech Therapist.
3.While she ___(work) in the hospital last winter she ___(meet) her old friends called Harry.
4.When I ___(enter) the class the students ___(discuss) the latest news.
5.Wnen the parents ____(come) home the children ___(watch TV).
6. While I ___(shop) this afternoon I ___(lose) my umbrella. I don't know where.