My father is forty-one years old.

It is thirty-four kilometers to my house.

I saw a Japanese tit in the park.

He is always grumbling about trivial things, it's really annoying.

He goes to the gym every day to train his quadriceps.

He made a model of a regular tetrahedron.

Understanding the four-step conjugation in Japanese is difficult.

I live in Yokkaichi.

He likes to speak using four-character idiomatic compounds.

He draws a four-panel comic strip every day.