It is our duty to help those in need.

I didn't buy anything at the duty-free shops.

I snuggled under the warm duvet on a cold winter night.

The Ming Dynasty ruled China for nearly three centuries.

She is eager to learn new things.

She showed great eagerness to learn.

I have a terrible earache.

She is known for her earnest dedication to her work.

I love watching the sunrise in the eastern sky.

She is an easygoing person who doesn't get stressed easily.