Tom stood there flabbergasted.

I'm flabbergasted.

Tom looked like he was flabbergasted.

I was flabbergasted to hear that she died of a drug overdose. She always seemed like such a straight arrow to me.

That flabbergasted him.

My husband was so flabbergasted he dropped his car keys.

I think Tom is flabbergasted.

I was flabbergasted when I found out that Mary used to be called Peter.

Tom was flabbergasted.

Ziri was flabbergasted.