Write the past continuous tense for the following:
1. While I was reading the essay, my sister .......... (write) in a notebook.
2. While our teacher was teaching the lesson, we ............ (listen).
3. While the doctor was giving an injection, the child .......... (cry).
4. When I saw them last evening, they ....... (watch) on the TV.
5. We ........ (talk) about all sorts of things.