1 Lizzy was walking / walked to school this morning. 2 I wasn't / weren't watching tv yesterday evening!
3 Were / was billy doing his homework?
4. Were mark and milly playing / play tennis at 3 p.m. yesterday?
5. Was helen listening / did helen listen to music a minute ago?​

Lizzy walked to school this morning. I wasn't watching TV yesterday evening! Was Billy doing his homework? Were Mark and Milly playing tennis at 3 p.m. yesterday? Was Helen listening to music a minute ago?​