根据句义,用括号内所给词的适当形式填空。 1. Lucy usually enjoys ______ (she) in front of the mirror before leaving home. 2. 'Why are you late for school again?' said his teacher ______ (angry). 3. My uncle lives on the ______ (twelve) floor of the building. 4. We all received an ______ (invite) to her wedding. 5. You can go ______ (cross) the street when the traffic lights turn green.