Did you ever think () where it came from?

问题描述:

Did you ever think () where it came from?
A.of B.about
选哪个?说一下为什么选和为什么不选?
我需要原因啊,要给别人讲解,我知道用about,可是不知为什么不能选of,各位麻烦多打几个字帮帮忙啊

think of - have a thought - example - "I thought of you on my way to work." think about - consider - example - "What should we do?I don't know.Let's think about it.(We'll consider the possiblities.)从...