-Where should I send my application?-The personnel office is the place to send it to.见下.

问题描述:

-Where should I send my application?-The personnel office is the place to send it to.见下.
为什么最后还要加to

因为这是send的固定搭配
送东西给某人 send sth to sb
原句你换一下位置就知道了
send your application to the personnel office