run out和run out of

Question

His money already _____ last month.
为什么填run out不填run out of？？
有什么区别？请解释清楚点...

Answer 1

run out of 后面要跟宾语的
run out 是不及物动词
你可以说He ran out of money last month

Answer 2

run out of后面要加地点
如run out of the shop