Tom is a lazy bone,he is always the last _______and the first_______..

问题描述:

Tom is a lazy bone,he is always the last _______and the first_______..
Tom is a lazy bone,he is always the last _______and the first_______.
A.to come,to leave B.come,leave C.coming,leaving D.to come,leaving
why?

选A
to come,to leave (动词不定式作后置定语,不是补语)