求教英语选择题,这道题为什么选D
George:You’re not looking very cheerful.__________?
Joe:Oh,nothing in particular.I’m just a bit fed up.
George:With your job?
Joe:Yes,that’s right.
A.Are you OK\x05\x05\x05\x05\x05\x05
B.Are you feeling well\x05
C.How are you\x05\x05\x05\x05\x05
D.What’s the matter with you