He was enjoying diving in the sea.

He has a one-track mind, so if he fails once, he never tries the same thing again.

November is my birth month.

Please show me my shopping list.

What will you do if, by any chance, he doesn't come?

What would you do in the unlikely event of an earthquake?

He bought illegal goods on the black market.

I was living in his house temporarily.

My class starts at eleven o'clock.

When learning Japanese grammar, it is important to understand verbs of the upper monograde conjugation.