6．—What do you do？

—I am a pilot．

—That _______ exciting．

A．would be     B．must be        

C．might be     D．can be

7．I cannot thank you ________ much for your help．Without it I could not have succeeded in my experiment．

A．very  B．too  C．quite D．that

8．There are 350 night clubs in the city , and you don’t often see_______ that is empty．

A． one  B．that  C．it   D．the one