lin tao walked (across/though) the hall and went into the library
问题描述：
lin tao walked (across/though) the hall and went into the library
括号里应该选哪个
答
正确：through
walk across.指穿过表面（如：the street/road/bridge...)
walk through.指穿过空间（如：the window/forest/hall/gate/door.)