When spring comes, young grass begins to sprout.

He saved the Dom Pérignon for a special day.

He always opens a bottle of Don Perignon on special days.

This triangle has one obtuse angle.

He rose from rock bottom.

He likes to take a walk in the park at dusk.

The boat was bobbing heavily in the waves.

Before starting his new business, he said, 'A journey of a thousand miles begins with a single step.'

It's cloudy weather today, isn't it?

He taught me how to calculate the area of an obtuse triangle.