Taken by surprise, I couldn't think of anything to say.
Taken by surprise, I was at a loss for what to answer.
Taken by surprise, I could not speak a word.
He surprised his opponent.
He interrupted us abruptly.
A contagious disease descended on the town.
The boss caught me napping today when he asked me about that XYZ project we worked on last month.
I was about to leave when Mary appeared out of the blue.
We had unexpected visitors.
The fort was attacked by surprise.
The door suddenly opening, she sprang to her feet.
A dog suddenly jumped at me.
The detective surprised the truth from the waitress.
We took the enemy by surprise.
Our army took the kingdom by surprise.
We ought to expect some casual visitors.
The surprise party for Laura is not tonight, but tomorrow night.
When the door slammed unexpectedly, it startled me.
The car made an abrupt turn.
The news took him by surprise.