Теперь раскройте скобки, поставив глагол в отрицательную форму в Past Progressive:
1) I (to talk) to my friend when the TV show started. - I was not talking / wasn’t talking to my friend when the TV show started.
2) They (to play) football when it began raining.
3) Jeff (to read) a new magazine when the doorbell rang.
4) Sue (to have) a cup of tea when the telephone rang.
5) We (to walk) a dog when it became dark.
6) You (to have) lunch when the TV show started.
7) The children (to enjoy) the game when it began raining.