You needn’t have apologized for your absence—       , it’s hardly your fault.

．We’ve published large quantities of books. This year______ we’ve published three million copies.

So hard did he work that he __________made himself ill for a whole week. 

-----Our women athletes achieved great success in the Vancouver Winter Olympic Games.----- Yes. No one could perform _____, I think.

The problem was that it is ___ valuable ___everyday use.