The reason why he left the tennis club is obscure.とは 意味・読み方・使い方

The reason why he left the tennis club is obscure.

I don't know the reason why he took a break from school.

I don't know the reason for her absence.

I myself don't understand the reason why I joined the tennis club.

I don't know why he quit the company.

His reason for not going is still unclear.

I don't see why he's absent.

I don't understand why you're leaving.

The reason why he did it is unknown.

I see no reason why he doesn't relate to the firm.

I don't know at all why he quit his job suddenly.

I have no idea why he quit his job suddenly.

It is still a mystery why he suddenly left the town.

He gave no explanation why he had been absent.

They wanted to know on what grounds he wished to quit.

His disappearance is a mystery.

I don't know at all why he quit his job suddenly.

I have no idea why he quit his job suddenly.

I cannot account for her absence from school.

I can't tell you why she was absent from school.

I know the real reason for his absence.

Do you know why he put off his departure?

I don't know the reason why he was absent.

Why he killed himself is still a mystery.

I don't know at all why he quit his job suddenly.

Nobody knows what the beginning of his trouble was.

He had no idea why his wife left him.

It's a mystery (to me) why she left.

I can't understand his obsession with baseball.

The doctor stopped the fight then.