Adverbials of luck and chance

They wanted to build a house there, but _____ someone told them about the plan to build an airport.

_____, Real Madrid beat the thrid division team easily, winning 6-0

Sorry but it was an accident, I didn't do it _____

_____, although he didn't work vey hard, he got 95% in his final exam.

They though it was a modern painting. _____, after some tests, they found that it was much older.

The ruins of the ancient city were discovered completely _____ while the construction company were building the new motorway

We thought our product was probably too expensive, and _____ it wasn't successful.

A: You did that on _____! - B: No it was just an accident.

I _____ broke your mug - I'm really sorry.

_____ it stopped raining in the afternoon, so we were able to take the children to the beach.

_____, I've lost my front door key, so O can't get into my house.

The money was found _____ by an old man while he was looking for a book.