He went to Shanghai ___ September 3, 1991 and came back ___ a cold morning last year. [ ]

Did you catch the train to Beijing last night?— No. It ______ for ten minutes by the time I got to the station.

_____ do you talk to your teacher at the School of the Air?—Once a week.[ ]

Excuse me, will the plane for Beijing within an hour?—I’m not sure. You can go to the Information Desk for help.

Please send ________ best wishes to Mary.