His collection of essays shows his deep thought and insight.

I am planning to take a written exam next week.

He is a good correspondent, always writing letters.

He is good at writing, especially at writing poems.

He always says 'time is money' and strives not to waste a single second.

You should always be prepared for the time of need.

I woke up at the witching hour.

During rush hour, the trains are very crowded.

Following the customs of the time, they celebrated the festival.

I wake up at seven o'clock every day.