The teacher asked the students ______ .
He___________ when the bus came to a sudden stop.
—What would you wish to do if you were a college student again? —That's very hard to say, but I wish I___________ when I was a college student.
His parents meant him_____________ scientific research, but he showed no interest and turned poet.
—Why didn't you answer my phone when I phoned you at about 11 p. m. yesterday? —I ___________and failed to hear the phone.
Peter won't drive us to the station. He has __________ to take us all.