在给浴缸注水前，记得把塞子塞进排水口。

Always put the ___plug in the drain before filling the bathtub.

浴室洗手池的塞子不见了，所以水存不住。

The ___plug in the bathroom sink is missing, so water doesn't stay in.

我们需要一个塞子来堵住桶上的这个洞，防止漏水。

We need a ___plug for this hole in the bucket to stop the leak.