看那个路标，上面写着“学校前方”。

Look at that road ___sign. It says 'School Ahead'.

商店门口有一个“营业中”的牌子。

There is an 'Open' ___sign at the shop door.

大楼窗户上有个‘出租’的牌子。

The building has a 'For Rent' ___sign in the window.