You think you've passed the exam, but don't count your chickens before they hatch.
don't be too confident that you will be successful
The company says they're not going to make anyone redundant in the restructuring, but I smell a _______________.
rat
I did all the ____________ work on this project, so I hope I'm going to get the credit for it.
donkey
When they divorced, Nick's wife got the lion's share of everything they owned.
The main part
He was like a fish out of water when he left the village and went to live in London.
felt uncomfortable or awkward in unfamiliar surroundings
I told him what I thought of him, but it's like a water off a ___________'s back.
duck
If the meeting's in Manchester, I can go and visit my mother at the same time - it'll kill two __________ with one stone.
birds
I think James was married before, but I'm not sure. He's a bit of a dark ____________.
horse