The Sanlu Milk Powder event is a clear indication that food safety is a big problem; nobody can __   _ all foods are secure to us, but we are sure that the situation is turning for the better.

The story of Whitney Houston is a good example of how drugs and bad relationships can _______ even the most talented stars. 

Interest is as________to learning as the ability to understand，even more so.

According to the American law, parents must keep their kids _______ except when they are in school.

—I'm going to Paris next week.—What a ________！So am I.