21.   Do you know the answer to this question?

22.   Do you know the answer?

23.   Nor do I teach because I think I know answers, or because I have knowledge I feel compelled to share.

24.   And, he was an old enough hand to know that nobody else in the room wanted to know the answer.

25.   He was curiously keen to know the answer to this question.

26.   But as soon as he posed the question, Owen knew the answer.

27.   Whereas Scots generally write colour and Australians write I know the answer, Americans generally write color and Indians in many circumstances write I am knowing the answer.

28.   We all knew the answer,.

29.   Foolish because I may know the answer already and just be testing you.

30.   As I said, perhaps I know the answers already.