Using old-fashioned language, he said, 'I need to get some sleep.'

In the old days, people went to sleep early when night came.

In the old days, people said 'Nenu,' which meant 'to sleep,' as we say today.

You need a sleeping bag when you sleep in the mountains.

I will sleep now.

We have a 1on1 meeting every week.

He is quite a good cook.

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

My keys are inside the house.

The Second Sino-Japanese War was a war that lasted from 1937 to 1945.