Alan always gets up late and then goes to school, so he ______ eats breakfast.

While he_____ on the phone, a man walked into his room.

Jane Goodall belongs to a great woman. — ________. She has devoted much of her life to protecting chimps everywhere.

Peter has two uncles. They____ work in Green Hotel.

Look, your sister is playing the piano over there.－She ______ be my sister. She has gone to America.