It's dangerous to get the dose of this medicine wrong.

This is really a good problem, isn't it?

It is generally believed that the life of the middle class is stable.

According to Chinese mythology, the creation of heaven and earth represents the beginning of the universe.

He has already finished writing the report, so we use the present perfect form.

He chose to dwell in that house.

He is twenty years old.

He will arrive in Japan on the twentieth.

There is always gentleness in his words.

He ate his meal like a beast.