【2015·浙江】Studies have shown that the right and left ear sound differently.
He was about to tell me the secret ______ someone patted him on the shoulder.
I was about to go out ______ the telephone rang.
We were swimming in the lake _______ the storm started.
She was walking down the road _______ she heard someone shouting for help.
The fire went on for quite some time _______ it was brought under control.