While I was _____ (study) for my exam, my friend called me and ____ (tell) me about a great party that had just started.
While I was studying for my exam, my friend called me and told me about a great party that had just started.
They were _____ (watch) a movie when the thunderstorm ____ (begin).
They were watching a movie when the thunderstorm began.
While he was _____ (work) on his computer, the power ____ (go) out, and he lost all his unsaved work.
While he was working on his computer, the power went out, and he lost all his unsaved work.