For often,achieving what you set out to do is not the important thing.Let me explain.

题目

For often,achieving what you set out to do is not the important thing.Let me explain.
这是一个完型填空,为什么【set out 】不可以换成【set about】

答案

虽说二者意思相同,但后面所接非谓语动词不一样.
set out to do sth
set about doing sth
若改成For often,achieving what you set about doing is not the important thing.Let me explain.就行.