clog|clogged|clogging

打印机的喷头被油墨结块堵住了。

The printer nozzle got blocked by ink ___clog.

我们卫生间的马桶堵了。

The toilet in our bathroom is ___clogged.

树叶堵住了排水沟，导致雨水无法排出。

The leaves were ___clogging the gutter, preventing rainwater from draining.