Ответ:

rang

was talking

rang

was opening

heard

was standing

Ответ:

I watching TV when the phone rang.It was my cousin from America.We were talking when the doorbell rang.I had opened the door when I heart my cousin laugh.He stood in front of me!

Объяснение:

Насчёт последнего не сильно уверена,либо stood,либо was standing