After many years of training, he finally entered a stage of enlightenment.

We spent the night in a mountain hut.

We go to the playhouse to watch a play on the weekends.

He mixed coffee and milk.

He went to the mountain to search for gold.

This ring is made of high-quality alloy.

The green traffic light came on, so I crossed the road.

He crossed the road ignoring the red light.

I stopped the car because the yellow light came on.

He is an expert in cryptography and is involved in the development of security systems.