I am surprised to see a _______ chair in the room.
--- When did you go to Shanghai? --- I remember ______ there when I was a boy of ten.
The experiment turned out to be a complete failure, _______ wasn’t ______ they wanted.
--- You’ve agreed to go. So why aren’t you getting ready right now? --- But I _______ that you would like me to start at once.
--- You didn’t hear me until now? --- No. I must ___________ soundly(沉) when you came in.
Was it because it rained heavily last night _____ you didn’t come?