While I was ____ (read) a book, the phone ____ (ring).
While I was reading a book, the phone rang.
They were ____ (play) music, and everyone _____ (dance) to the rhythm.
They were playing music, and everyone danced to the rhythm.
While we were ____ (hike) in the mountains, we ____ (find) a hidden waterfall.
While we were hiking in the mountains, we found a hidden waterfall.
She was ______ (cook) dinner when the guests _____ (arrive).
She was cooking dinner when the guests arrived.
When I ____ (arive) at the party, they were ____ (decorate) the house with balloons.
When I arrived at the party, they were decorating the house with balloons.
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.
As I was ____ (Drive) to work, I ____ (see) a beautiful rainbow in the sky.
As I was driving to work, I saw a beautiful rainbow in the sky.
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.
They were ____ (play) soccer when the rain _____ (start)
They were playing soccer when the rain started.
While they were ____ (hike) in the mountains, it suddenly _____ (start) snowing.
While they were hiking in the mountains, it suddenly started snowing.
They were _____ (watch) a movie when the thunderstorm ____ (begin).
They were watching a movie when the thunderstorm began.