1.   Although Michael Lee concealed the fact very well indeed, Katherine was well aware of his leanings.

2.   And they can not conceal the facts by engaging in what is little more than a charade.

3.   He managed to conceal the fact that he had been in prison and so got a job as a security officer.

4.   If anyone did know her secret, that person certainly concealed the fact well.

5.   Otherwise he concealed the fact that he was in the army as far as possible.

6.   She sat down to conceal the fact that she was trembling.

7.   She tried to conceal the fact that she was pregnant.

8.   Such crude alignments concealed the fact that realists such as Fairfield Porter or Freud were no more politically committed than their abstract colleagues.

9.   I had no intention of buying one, but I could not conceal the fact that I was impressed by the size of the diamonds.