I wore a stunned expression at his astonishing remarks.

He floated petals on the pond.

He was able to come up with a new idea in his mind.

I was really astonished by his sudden proposal.

I was taken aback by his sudden proposal.

Lo and behold, he passed the exam.

His comment affected all the people.

He made important remarks at the meeting.

I'm just amazed at his genius ideas.

He is my best friend.