+Nice work! / You did a good/ great job!
+ Perfect! / No mistakes!/ You didn't make any mistakes!
+Ten out of ten/ 100% /It's a record!
+ Give yourself/ yourselves a pat on the back!
+ Let me shake your hand!☺)/ Give me five!
+Well done (everybody)!
+That is/ was (really/ absolutely) excellent/ fantastic/ fabulous/ great/ super !
+That's (so/ very/ really) good! /Not bad!
+That's right! / Exactly!/ That's (exactly) the correct answer!
+I'm impressed/ That's (very/ really) impressive!
+ O.K, I'll accept that as an answer.
+That's a (very) good/ great/ original/ imaginative suggestion/ idea!
+I like that very much! / I like this one best!
+Wow! That was quick!
+ You are the winner/ the champion(s)! / You have won the game!