20. --- What do you imagine _____ her look so upset?

　 --- _____ by her teacher again.

A. making; Because she was blamed　　 B. making; She was being blamed　

C. made; That she was blamed　　　 　　D. makes; Because of her being blamed

19. After the long journey, the three of them went back home, ______.

A. hungry and tiredly　 　　　B. hungry and tired　

C. hunger and tired　 　　　　D. hungrily and tired

18.---How do you like the plan put forward by Mr.Smith?

　 　--- Considering its real _____ , it will be worth having a try.

A. price 　　　　　 B. value 　　　 　　C. cost 　　　　 　D. expense