脑筋急转弯What is it that you can keep after gving it to someone else?

问题描述:

脑筋急转弯What is it that you can keep after gving it to someone else?

Love ?

what is that?

俺就不动英文,嘿嘿呵呵

knowledge

脑筋急转弯,同学.
promise
You give promise to others,and you must keep it.!

secret?