It was _________ to see anything in the fog.

• impossible

• inpossible

• unpossible

You can't run 20 kilometres in one way if you're ________ .

• unfit

• imfit

• infit

It's ________ to charge children the same price as adults.

• unfair

• imfair

• infair

Petrol is very expensive now, so big cars are becoming _______ .

• unpopular

• inpopular

• impopular

It's _______ to eat too much and do no exercise.

• unhealthy

• inhealthy

• imhealthy

You shouldn't use _____ expressions when you write a job application.

• informal

• unformal

• imformal

People became ______ when they had to wait outside the stadium.

• impatient

• inpatient

• unpatient

That old bicycle is _____ and nobody should ride it.

• unsafe

• imsafe

• insafe

Heavy snow is forecast, so drivers should avoid any ________ journey.

• unnecessary

• imnecessary

• innecessary

In colder countries, many animals are ______ during whe winter.

• inactive

• unactive

• imactive