Fifty dollars for such a T-shirt!You ( ) be joking A.must B.

Fifty dollars for such a T-shirt!You ( ) be joking A.must B. （急）一道英语选择题Fifty dollars for such a T-shirt!You _____ be joki two hundred yuan for such a good T-shirt!you ____ be joking! you must (be joking) You must be joking you must be joking,救命 句:You must (be joking). He must be fifty,________?A.mustn't he B.can't C.must he D.m do you think fifty dollars is/are enough for a chair?选is 还是 Your shirt is rather dirty.___I wash it for you?A Must B Wil 变反意疑问句You must be joking,_____? you must be a writer,_____ you ? A.mustn't you B didn't you