He was working on the computer for a long time.

My favorite mug is the one my mother gave me.

This insulated bottle can keep drinks warm for a long time.

This mug has high heat retention, so the coffee stays hot for a long time.

This coffee is very hot.

I drink coffee every morning.

Education about sex is very important.

This building is very high.

How tall is this building?

Oh well, it's useless to say anything anyway.