---Susan, go and join your sister cleaning the yard.
--- Why ? John is sitting there doing nothing.
A. him
B. he
C. I
D. me
网友回答
A. him
B. he
C. I
(答案→)D. me
解析：考查代词：妈妈叫susan去帮姐姐（妹妹）扫院子，susan回答，为什么 ，John做在那里什么事也不做。所以根据意思来看，susan是说什么是我，why (it is) me (who should go to clean the yard)? 为什么是我，这里是需要一个宾格形式的，所以用me，选D。