别松开绳子！

Don't ___let ___go of the rope!

我松开羽毛，它飘落到了地上。

I ___let ___go ___of the feather and it floated to the ground.

她松开床垫，双手托腮坐在床上沉思。

She ___let ___go ___of the mattress and sat on her bed, lost in thought.