No one knew it.
What surprised me most when I first entered college was how few of my classmates knew how to study efficiently.
She knew herself that it would be very difficult to carry out the mission.
The man who she knew was wanted by the police suddenly appeared at the back door.
When you said you'd look after Spot, you knew there'd be responsibilities.
I knew something bad would happen if Tom and Mary went hiking together.
If we knew what we were doing, it wouldn't be called research, would it?
They knew that doing their work cheerfully is the only way to make routine work bearable.
If you only knew what kind of a situation I am in.
That portrait reminds me of someone I knew a long time ago.
We're starting to question what we thought we knew.
Millions of people all over the world knew about Rev. Martin Luther King and his beliefs.
They knew they must fight together to defeat the common enemy.
Browsing long enough through eBay, you're sure to find something that you never knew you wanted.
Shakespeare knew only a little Latin, but he put the little he knew to very good use.