He had a hard time finding his dog's tag.

The tone of this painting is very beautiful.

He is good at calculating polynomials.

It's difficult to solve this mathematical expression.

I bought a new bedsheet.

This simple system is easy to use.

He threw the first ball at the ceremonial first pitch.

Shikimori Inosuke is my friend.

He was so scared to enter the haunted house that his legs were shaking.

The deposit for this apartment is two months' worth.