______ is no possibility______ Bob can win the first prize in the football match.

     private cars are bringing us convenience, they may also cause traffic accidents and pollution.

I spent the whole day repairing the car. The work was______ easy.

-- How long do you think it will be ______ the bus arrives here?-- No more than five minutes.

It has been proved _______ eating vegetables in childhood helps to protect you against serious illnesses in later life.