I just don’t understand ______ that leads toso many teenagers becoming addicted to playing computer games

No one except my parents _____anythingabout it

He will revenge himself____his neighbor, a mean (卑鄙的) officer, ____ the murder of his wife

You can’t imagine that a well –behaved gentleman ______ be so rude to a lady.

While large numbers of residents in this area ______ the A/H1N1 flu, very few suffered death.