His eyes were filled with deep sorrow.

He is good at explaining that theory.

He is known as a person with learning.

Have you checked the timetable for the new semester?

I exercise at the gym for two hours every day.

What do you call 'time' in dialect?

I've been waiting for hours at that shop, but the meal still hasn't come out.

Sorry for the wait, your order is here.

It is important to understand the importance of health.

His explanation was impossible to understand.