Ii open the brackets using past simple, past continuos, or past perfect. 1.the boys (to play hockey in the park while the girls (to draw) a picture. 2. mrs. brown (to understand) that the children already (to translate) the text. 3.from 5 till 6 p.m. yesterday she (to watch) tv 4.i (to read) a very interesting book when somebody (to knock) at the door.

1. The boys were playing hockey in the park while the girls were drawing a picture.
2. Mrs. Brown understood that the children had already translated the text.
3. From 5 till 6 p.m. yesterday she was watching TV
4. I was reading a very interesting book when somebody knocked at the door.