选stressed,还是stressed out?

问题描述:

选stressed,还是stressed out?
Hard work makes me ________ these days.
A.stressed B.stressed out
选哪个?为什么?

选B,stress本身有压力的意思,而句子意思是要表达“最近我压力大到精疲力尽的程度”,stress out正好含有此意.