单项选择题
W: How long will it take you to fix my watch M: I’ll call you when it’s ready, but it shouldn’t take longer than a week.
A.Operator and caller. B.Librarian and student. C.Customer and repairman.
A.when B.why C.because D.what
A.their appearance (出现,外貌) B.the kind of food they eat C.their size D.the way they rest