1、Mark, Mr. White _____. Would you please drive him to the airport?

A. has left         B. leaves        

C. is leaving        D. is left

2、- Do you know our town at all?

_ No,this is the first time______I _____ here.

A./,was    B./,have come  

C.that,came   D.that,am coming

3、He has failed three times. Do you want him to try _____  time？

A．fourth B．the fourth 

C．a fourth D．another fourth