host

她是一位受欢迎的脱口秀主持人。

She is a popular talk show ___host.

她在德国与一个寄宿家庭住了一段时间。

She lived with a ___host family in Germany for a while.

我与寄宿家庭同住的经历非常好。

My experience living with a ___host family was very good.