Помогите с заданием 7,срочно пожалуйста(

1. they were swimming in the river2. the bell was ringing3. Thomas was making a model of airplane4. I hoped you were coming5.we were singing a song6. he boys were writting a letter7.the cat was sleeping8. I was openning the door9.he was looking at the picture10.the farmer  was working in the field