They have stayed with host families in Beijing for a week
问题描述:
They have stayed with host families in Beijing for a week
答
他们寄居在东道主家在北京呆了一周
答
他们已经在北京的接待家庭里住了一周了
答
他们已经在北京接待的家庭里住了一周了.
答
他们在北京接待家庭里已经呆了一个星期了。