He has been suffering from dystrophy since he was young.

We conducted fieldwork for geography.

I have confirmed your reservation.

I have confirmed your reservation.

I stabbed the needle for the injection.

He used a handkerchief to wipe his sweat.

Your feedback is very important to us.

Apostrophes are often used in English spelling.

He kept a poker face and did not show his emotions.

Bromofluoromethane is a type of chemical substance.