Her stubbornness and _____ lead to her final success.

According to a UN report, a third of the world population have no ______ to clean drinking water and health care．

If you don’t take away all your things from the desk, there won’t be enough_____ for my stationery.

—I am afraid this pair of shoes is a little expensive．—If you really want to buy them, I will give you a ____ of 10 percent．

----Must I do well in all the subjects, Mum?----Sure, baby! As an old saying goes, knowledge is _________.