_________ is a growing world problem, and nowadays the United Nations and its member countries _________hard to deal with it.
I’ve made several travel plans for our vacation, but I’ll leave it to you ______ one.
My father warned me going to the West Coast because it was crowded with tourists.
Based on a true story, the film shows a hero racing ______ time to get back the stolen papers.
Many people have donated that type of blood; however, the blood bank needs _____.
The landlady prefers to have women in the apartment rather than men. She thinks women take______ care of things!