We must work hard. There _______an important exam in June.

I don’t think his success has a lot to do with good luckIt’s hard work ______ has made him what he is today

John was made _______ the truck for a week as a punishment.[ ]

From the ______ expression on his face we can guess something ______ must have happened to him.

The experiment has____ the possibility of the existence of any life on that planet, but it does notmean there is no life on other planets.[ ]