One day, a little boy comes to a store and says to the clerk, "I want to buy twelve exercise books of six cents each and nine pencils of ten cents each. How much is that altogether（总共）?"The clerk write these numbers down on a piece of paper and thinks for a minute. Then she says, "One dollar 62 cents." "If I give you ten dollars, how much money will I get back?" "You will get eight dollars 38 cents for change. Here you are. These are the things you want.""No, thank you. I don't want to buy anything," the boy looks at the piece of paper and says politely（礼貌的）."This is my math homework. Thank you very much. Can I take it away?"
⑴The story happens（发生）_________.
A.in a store
B.in a math class
C.at school
D.at home
⑵The little boy comes to the store for ________.
A.9 pencils
B.12 exercise books
C.9 pencils and 12 exercise books
D.his homework
⑶The little boy is _______.
A.bad
B.naughty（淘气的）but clever
C.stupid（愚蠢的）
D.hard-working（刻苦的）
⑷The word "change" in the passage means _______ in Chinese.
A.零钱
B.交换
C.改变
D.金钱
⑸What does the underlined word it mean in the passage?
A. Money.
B.His homewor k.
C.The piece of paper.
D.The change.