Cấu trúc: S + say(s) / said + (that) + S + V
`1`. My uncle asked if a return ticket was cheaper than two singers.
`2`. “ A dog owner asked if puppies travelled free.
`3`. “She asked me ifr shw could bring her dog into the compartment with her.
`4`. “ Bill asked if this train stopped at York.
`5.` Businessman asked me if/ whether I could telephone from inter-city trains.
`6`. He enquired if/whether the 2.40 train had a restaurant car.
`7 `. My aunt asked me if/whether she could get coffee on the train.