He started a new business, waiting for the perfect opportunity.

It is important to learn the history of the Japan-Manchukuo Protocol.

This shirt is made of cotton.

Nice to meet you, please let me introduce myself.

Nice to meet you, I'm Tanaka. Let me introduce myself.

He is too self-conscious, so he has difficulty speaking in public.

He should stop his selfish behavior.

He studies in the library every day for self-improvement.

She emphasized the importance of self-determination.

He should stop his self-destructive behavior.