The sun set; the room grew too dark to see.

The water around them had again grown dark and cold.

It grew quite dark, though I knew the sun had not yet set.

When it grew dark I left to see my family.

It had grown almost dark when she heard his voice.

The room was growing very dark, yet Breeze did not like to put on the light.

It was growing too dark to see his face clearly, but I thought he seemed embarrassed.

She looked out at the sky, which had grown dark while they talked, and stood up.

It had already grown dark when the job was finished.

Before it grew too dark to travel he had walked eight miles.