She noticed suddenly that they had not said a word for a long time.

She suddenly noticed that several people were looking at her.

Turning my head to look, I suddenly noticed that the other man was gone!

Jack noticed suddenly that the door to her house was wide open.

Susan suddenly noticed something on the table in front of her.

He noticed suddenly that everyone in the room was silent and looking at him.

He looked back over his shoulder at the way they'd come; noticed suddenly that Smith was not in the room.

Then, through the crack in the door, he suddenly noticed that a light was coming.

Those buildings looked very old - and there was another difference that she suddenly noticed.

I started slightly upon suddenly noticing him at my shoulder.