A． Yes, but a little later.B． I needed it, but I can wait.C．The Astra File in the top drawer.
单项选择题——What are these shoes made out of?——（）
A． They're all leather.B． They were made in Vietnam.C．Ten thousand were produced.
单项选择题——Am I too late to enter the meeting?——（）
A． It should be over by five.B． No sir, they're about to start.C．You can enter through those doors.
