Listen to a short passage about Princess Diana and her charity work and fill in the blanks.[音频]The metamorphosis (转变) came the day in April 1987 when Diana opened Britain’s first purpose-built ward (病房) for AIDS __________, at London’s Middlesex Hospital. Many were shocked at the fact that she didn’t wear any__________clothing. At that time the______________Briton (英国人) knew very little about AIDS. Some believed it could be caught and passed on by__________,__________, or even__________someone who was__________. The revelation (被揭露的事) that a__________, like Princess Diana, the mother of two young sons, had taken such an__________risk with a__________disease shocked many people.