当你询问两本科学书的价钱时，你说：
A.How much is it?
B.How much are they?
C.Can I help you?
How _______ your aunt usually go to work ?
A. isB. doesC. did
_____________ does he do ? He’s ________ office worker .
A. What / anB. Who / aC. What / a
Do you like history ? ______________________
A. Yes , I can. B. No , I don’t . C. Yes , I am .
It’s ______ in fall .
A. orange B. green C. white
February is the ________ month in a year .
A. first B. second C. third