I______(fall) asleep while I______(read) the novel.
查看答案
It______(rain) hard, but no one stopped working.
While I______(work) in the garden, my wife______(cook) dinner.
Sarah______(demonstrate) a dance step when she______(trip) on a rug and fell.
While we______(watch) the play, an usher______(come) over to us to check our tickets.