IN or ON?

IN or ON 3

Choose the option you think is correct

This is the best model __________ the market.
IN
ON
I'd like to welcome you, __________ behalf of the company, to London.
ON
IN
This jacket would normally cost $500, but it's __________ offer at the moment.
ON
IN
This jacket would normally cost $500, but it's __________ sale at the moment.
IN
ON
You'll have to pay 10% of the purchase price __________ advance.
IN
ON
Could you put those books __________ the shelf?
IN
ON
Rio is by the sea = Rio is __________ the coast.
IN
ON
The pub will pay for this drink. = This drink is __________ the house.
ON
IN
The company's performance is more or less __________ line with our forecasts.
IN
ON
What's __________ the menu today?
IN
ON