11.   Ruff blithely claims ignorance of technology.

12.   Schork was driven by a desire to ensure that nobody could claim ignorance.

13.   U.S. citizens, whose right to bear arms is written into the Constitution, often claim ignorance about the strict anti-gun laws south of the border.

14.   When questioned by police later, they claim ignorance.

15.   While maintaining he only followed procedures, Perez claimed ignorance about a number of things relating to his work and his training.

16.   But Ms. Cao said villagers often close ranks against outsiders and police, claiming ignorance.

17.   He said countries cannot claim ignorance of the problems because there is too much information available over the Internet for that.

18.   Behramaj countered by claiming ignorance, saying she was a mother of four, just taking care of her family.

19.   The students claimed complete ignorance of the historical symbolism of the swastika, which they had bought from a stall in a nearby market.

20.   Werner made it clear that Yang and Lu had both claimed ignorance as to how they came to test positive for DHT.