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.

他正用力把最后一件毛衣塞进已经满满的抽屉里。

He was ___jamming the last sweater into the already full drawer.

他们周末常常聚在一起用乐器即兴演奏。

They often get together on weekends to ___jam with their instruments.

暴风雨干扰了我们的无线电通讯。

The storm is ___jamming our radio communications.