他正在用绳索下降。

He is using a rope to ___descend.

电梯正在缓慢下降到一楼。

The elevator is slowly ___descending to the first floor.

这个习俗源于100年前的民间传说。

This custom ___descends from a folk tale 100 years ago.

一群记者突然蜂拥而至，围住了刚下飞机的明星。

A group of journalists ___descended upon the celebrity as soon as she stepped off the plane.

他们的关系逐渐恶化成了相互指责。

Their relationship gradually ___descended into mutual accusations.