My ine is rather changeable, but I earn £73 a day .
A. on the other hand
B. in particular
C. on the whole
D. on average
网友回答
A. on the other hand
B. in particular
C. on the whole
(答案→)D. on average
解析：考查介词短语辨析。A另一方面；B尤其；C总的说来；D评价说来；句意：我的收入很合理，打扫我平均一天收入73美元。故D正确。