She is a twin sister.

Do you know the origin of this word?

He is pouring his passion into language study.

We prepared for tomorrow's meeting.

This animal is a protected species, so you must never touch it.

Using abbreviations makes the sentence shorter.

I'm thinking about what to do on the weekend, but I want to find some new entertainment.

The traffic light turned red, so I stopped.

His opinion is always rational.

Please check before you throw away the eggshell.