Understanding the transition state of a chemical reaction is important for predicting the progress of the reaction.

The negotiations have fallen into a deadlock.

He fell into a state of lethargy after the exam.

She is planning a date with her current boyfriend.

He lost everything.

My boyfriend gave me a gift.

Everyone was surprised by the news.

Grandpa was scratching his back using a backscratcher.

I installed a new doghouse in my garden.

She is the mother of quintuplets.