In the beginning of summer, flowers start to bloom and nature comes alive.

In his room, beautiful paintings and writings in black ink were displayed.

This project faced significant challenges in its first year.

He doesn't easily open up to strangers.

This is my first Japanese class.

The temperature rose after the warm front passed.

Noble gases are known for not participating in chemical reactions.

In this area, there is a shortage of noble gas supply.

Our house is heated with natural gas.

Mustard gas is a type of chemical weapon and is very dangerous.