gaolan

A :did you finish typing  that report?
b:yes ,i did,but i worked  late.
A:so,it must be a long report,i guess
b:exactly,12 ages,i spent three hours on it.
A:by the way ,what time did you go home?
B:i leave  the  office at nine o'clock, i got home at ten.
A:what did you have for dinner?
B:i sent our for sandwich and eat  it on my desk.