My keys are inside the house.

He is quite a good cook.

I think his Japanese has improved quite a bit, hasn't it?

I am busy with work during the daytime.

He can say 'there's no place like home' wherever he goes, and can quickly get used to new places.

You need to be careful because the amanita is poisonous if you eat it.

In ancient documents, there is a mention of a fish named Tengu-zame.

He can speak four languages.

The moon has risen, and the night has deepened.

There are four seasons.