tower

教堂塔楼上有一个时钟。

There's a clock on the church ___tower.

他在旧金山市中心的一栋办公大楼工作。

He works in an office ___tower in downtown San Francisco.

从几英里外我们就能看到那座古老城堡的塔楼。

We could see the ___tower of the old castle from miles away.