Wow!
Example: "Wow! I didn’t expect to see you here."
No Way!
Example: "No way! You really won the lottery?"
That's Shocking
Example: "That’s shocking news about the company merger."
I Can’t Believe It
Example: "I can’t believe it—this cake is homemade?"
Are You Serious?
Example: "Are you serious? You got front-row tickets?"
Unbelievable!
Example: "Unbelievable! I can’t believe you did it so quickly."
That's Unexpected
Example: "That’s unexpected—I didn’t know you were coming."
Oh My Goodness!
Example: "Oh my goodness! This is the best surprise ever."
What a Surprise!
Example: "What a surprise to see you at the party!"
That's Incredible!
Example: "That’s incredible—you finished the race in record time!"