He to paint the whole house early this morning, but has only finished the front part of it so far.
A. set about
B. set off
C. set up
D. set out
网友回答
A. set about
B. set off
C. set up
(答案→)D. set out
解析：考查短语辨析。句意“他一大早开始粉刷整个房子，但是到目前为止，只完成了房子的前面部分。”A“着手，开始做......”，后跟doing；B“出发，使爆炸”；C“建立”；D“出发，开始”，后加to do sth.。故选D。