I ____________ for about an hour and a half when suddenly I slipped and fell down a riverbank.
举一反三
- I ____________ for about an hour and a half when suddenly I slipped and fell down a riverbank. A: had been walking B: walked C: had walked D: was walking
- I ________ down to London when I suddenly found that I was on the wrong road.
- I was awfully tired when I got home from work, but a half hour nap ____me.
- I ___________ (listen) to the music when someone __________ (knock) at the door half an hour ago.
- I had not been reading for half an hour _____ I heard steps outside. A: when B: that C: while D: as