It was ____ that he had to ask for help．

It has been raining every day so far. I hope tomorrow will ______ fine.

I think students should have their own mobile phones at school.—__________. They often use them to play games instead.

Experiments of this kind ___in both the U.S and Europe well before the Second World War

In order to catch the movie, Mary finished her supper in ________ ten minutes.[ ]