host

n. 主机,主人,主持人,东道主.
v.主持,做东.

At the end of the party, we thanked our host and went away.

宴会结束时，我们谢了主人后便回家去了。

Which country will be the host country for the next Olympic Games?

哪个国家将是下届奥运会的主办国？