I’m sure you will do better in the test because you ________ so hard this year

I don’t think Germany will win the World Cup three years from now.

Mrs. Black doesn’t believe her son is able to design a digital camera, ______? [ ]

Why do you suggest we buy a new machine? — Because the old one has been damaged ___________

n this way, directed by theteacher, ______work out the problem the day before.