I'd had a pretty clear idea from a very early age what he was trying to leave behind.

Few had any clear idea of where they were going.

How that was to be done, he had no clear idea himself.

They had no clear idea of what was going on.

At the moment, no one seems to have a very clear idea what is going on in China.

These people seemed to have no clear idea of how to deal with him.

This is a period as to which not everyone has a clear idea.

Especially since I had no clear idea what they were.

And now we also have a pretty clear idea of what that might be.

So far we have had no clear idea what to do.