Who has found out the answer _____ this question?

Edde is eight years old, but we have seven candles only, we need______ candle.

I hear the weather will ____ cold for anotherweek.._ I hope not. I hate cold weather..

We have taken effective measures to ________ our natural resources.[ ]

formation confirms me in the belief __________ he, as well as his coach, is to blame.