20. There was only one ____ of transportation in this mountainous area five years ago.

A. mean 　　　　　　　　　　　　 B. means 　　　　　　　　　　 C. meaning 　　　　　　　　 D. way

19. He ____ the explosion, but no one else did. How lucky he was!

A. survived 　　　　　　　　　　 B. saved 　　　　　　　　　　　　　　 C. lived 　　　　　　　　　　　 D. stayed

17. John shut everybody out of the kitchen ____ he could prepare his grand surprise for the party.

A. which 　　　　　　　　 　B. when 　　　　　　　　　　 C. so that 　　　　　　　　　　 D. for

18 ____ they did not believe him, what would they do then?

A. Suppose 　　　　　　　 　B. Supposed 　　　　　　　 C.I suppose 　　　　 　　D. You suppose