"It is a body of theory, yes, but one which needs constantly to be tried out in practice, developed and revised."

Especially with print media, where there's so much space to fill that you constantly need things to talk about.

There are a great number of myths that constantly need to be laid about school dinners.

And they would constantly need to be with other people.

"They constantly need to bring news and excitement to the brand," he said.

A boy constantly needs something to lean on, an indication where to go, doesn't he?

As if I constantly needed reminding that they had died.

Attention needs constantly to be drawn to this fact.

That is why we need constantly to reflect upon whether a certain change of course would not be appropriate.

European industry constantly needs more energy, as do households and transport.