When will this pain end?

He has tasted suffering for a long time.

In this research, quantitative data analysis plays an important role.

He is in his unlucky year, so he needs to be particularly careful.

He seemed to be in trouble.

I bought new shoes.

The Earth's gravity pulls us towards the ground.

My younger sister is very smart.

Where is your younger sister?

He came to America as an immigrant when he was young.