单项选择题
M: I hope that the bank will be open. W: The sign says: nine a.m. to five p.m. weekdays, nine a. m. to twelve noon Saturdays, closed Sunday.
A.12 noon to 9 p.m. B.9a.m. to 5 p.m. C.9a.m. to 12 noon.
A. out B. along C. about D. into
A. they were using B. having used C. may have used D. using