He became more confident by degrees.

I have been living by myself for three years.

You can achieve your goals by taking it step by step.

I was intrigued by the mysterious book.

His job security is hanging by a thread.

He will achieve his goal by any means necessary.

Serious crimes committed by my wife.

The company is by a wide margin the most popular in the area.

I chose to go to the party by choice.

I bumped into him by accident.