He felt powerless against the situation.

He was overwhelmed by a sense of powerlessness against the situation.

You should always be prepared for unforeseen circumstances.

I contributed books to the local library.

My pet parrot is very smart.

My pet parrot is very smart.

He deeply believes in the principles of communism.

He remembered the events of that day.

The zipper on my jacket broke.

Please tighten the chuck of the drill properly.