11.   Scientists still do not know with any degree of certainty why the disease spread so quickly.

12.   The customer made his displeasure known with more acerbity than was necessary.

13.   And in the morning there was nothing to see they were floating about you know with the floods.

14.   In a world with uncertainty, the future spot price will not be known with certainty.

15.   It was a case of Crawford bringing in someone with whom he knew he could work.

16.   Is there anything that we can really know with certainty?

17.   The clearers tell the Bank of England of their target balances so this influence on the money market cash position will be known with reasonable certainty.

18.   Yeah, yes, hi, you know with warm both hands, the boat.

19.   She knew it with a dragging certainty.