IN or ON?

IN or ON 4

Choose the option you think is correct

He hasn't been paid for three months. = His salary is three months __________ arrears.
ON
IN
It'll be a good investment __________ the long-run.
IN
ON
Claire has just had a baby, so she's __________ maternity leave at the moment.
ON
IN
There's a strong demand for our new product. = Our new product is very much __________ demand.
ON
IN
You're just __________ time for lunch.
IN
ON
This bus is almost always late. = This bus is hardly ever __________ time.
IN
ON
Pete tends to buy too much stuff __________ credit.
IN
ON
The company has a lot of debts. = The company is heavily __________ the red.
IN
ON
The factory is closed at the moment as the workers are __________ strike.
ON
IN
FROM THIS MOMENT, I'm going to try and do a bit of exercise. = From now __________ , I'm going to try and do a bit of exercise.
IN
ON