It would have been possible for us to complete the task. (COMPLETED)

We _____________ the task if we had tried harder.

You ​ (a)   my dog! I don't have one.

I can only think of one reason. You ________ left your keys on the bus! (have)

You __________ heard me right. I definitely said Monday at 2pm.

Well that was a waste of time. We ​ (a)   have gone. Jerry had five other people helping him.

I'm really sorry! I accept I ​ (a)   been a bit rude to you.

School uniforms were not compulsory (Pflicht) at my old school.

We ___________ a school uniform at my old school.

I _________ have become a millionaire but I lost out on the chance.

You _______ have been here when Susan told the boss to get lost and quit her job. It was great!

Peter was in France then, so he __________ have broken the printer.

I __________ have bought that car! It's a piece of junk. What a mistake!

I ________ open those biscuits or I will eat them all!

Sorry, I _________ go. I'm really late already.

Thank you so much! You really ________ have gone to so much trouble.

Correct only the mistake:

Surely you mustn't have forgotten already! I've just told you.

Correct only the mistake:

Harry may have won the match with a bit more effort. He was lazy.

Correct only the mistake:

Oh look, £20, I shouldn't have gone to the bank after all.

Correct only the mistake:

You mustn't have been so unkind to him! He is so sad now.

Now, add the best adverb!

You ​ (a)   must have picked up that bad by mistake.

You could ​ (a)   have stolen the painting without anyone noticing!

George ​ (a)   wouldn't listen to anything we said.