It is snowing ___(heavy) now. China has a history of five ___(thousand) years.We have different kinds of ___(scarf) Where is Miss liu? She ___ (sit) in the office. 请说明原因（根据某些词来确定空的形式,结合一些语法,来分析一下）
问题描述：
It is snowing ___(heavy) now. China has a history of five ___(thousand) years.
We have different kinds of ___(scarf) Where is Miss liu? She ___ (sit) in the office. 请说明原因（根据某些词来确定空的形式,结合一些语法,来分析一下）
答