After they got __________,he never remarried.【选项】
—You seem to have known Dr. Ken for a long time. —That’s true. ________ he joined our club years ago.
You _______ her in her office last Friday; she’s been out of town for two weeks.
---Are you coming to Tom’s party? ---I’m not sure. I______ go to the concert instead.
When I arrived at the station, I found the train _________ for passengers.
—How long are you staying in Nanan? —I have no idea. __________.