A.$20.00 B.$46.50

　　C.$56.50 D.$26.50

　　38.When the writer gave John the money, he was happy because _______.

　　A.he got what he should get for his work

　　B.he got much more money for his work

　　C.he got the money easily

　　D.he didn’t have to add up the costs again

　　39.From the story we know that ______.

　　A.John made a mistake in the bill

　　B.John tried to fool the writer in order to get more money for his work

　　C.John had written out the bill before the writer got home

　　D.John still wanted to get $36.50 for his work in the end

　　40.What do you think of the writer? He is ______.

　　A.honest B.clever

　　C.foolish D.afraid