I entrusted my dog to him.

He checked whether he remembered or not.

Cyclooctane plays an important role in organic chemistry.

He took out a book from the bookshelf at the back of the room.

We study every day to cultivate new skills.

I cleaned the window that was dirty with soot.

Bioinformatics is an essential field for the analysis of biological data.

She bought a new vibrator.

He joined the multi-level marketing business.

He decided to start a multi-level marketing business.