They'd all been talking about the idea for the last several days.

I asked one of my science teachers what he thought about the idea.

I start to think for some reason about the idea of being all right.

Someone might ask what you think about the idea or situation.

He didn't need an answer to know how she felt about the idea.

He'd been thinking about his idea for a long time.

I'm not so sure about your idea for the long list.

You don't always have to be dead serious about the whole idea of Europe.

At dinner one night, he told her about his idea for madcityhomes.com.

Maybe he knew too much about the old man's ideas.