If I were you, I would study harder.

Please submit your application by the end of the week.

The subplot in the novel adds depth to the main story.

The floodwaters gradually subside after the heavy rain.

Water is a substance that is essential for life.

He substituted for the injured player.

The book had a subtitle that explained the main theme.

The subtle scent of flowers filled the air.

To solve this math problem, you need to subtract the second number from the first number.

I live in a quiet suburb.