He has left his book here on , so that you can read it. A. purpose B. intention
来源：网络
时间：
推荐文章
He has left his book here on _____, so that you can read it.
A. purpose B. intention C. aim D. meaning
试题答案
A
purpose. on purpose是介词习语，意为“故意地”。如用intention,则应说by intention故意地。