单项选择题
A．Right now. B．This week. C．Next week. D．Two weeks later.
A．At about 4:30. B．At about 5: 15. C．At about 6:30. D．At about 8:00.
A．Find New York Airlines’ office. B. Book an air ticket to Detroit. C. Change his flight number. D. Confirm his air ticket.