My boyfriend gave me a gift.

Everyone was surprised by the news.

She overreacted to his words.

Nuclear reactions are used for mass production of energy.

This chemical reaction is very dangerous.

His single word triggered a chain reaction, and everything changed.

I was surprised by his overreaction.

His body showed a rejection reaction to the transplanted organ.

He was born as an illegitimate child and experienced many difficulties.

My grandfather used to till his privately-owned rice field.