He is _________ of the three.
--- Another cup of coffee? ---No. thanks. I _____ be off. Marry is waiting for me.
--- What’s your brother? ---He _______ a teacher, but now he is a doctor.
--- How long have you ________ Hong Kong? --- For two weeks.
Jack ____ to help our Chinese teacher carry books yesterday morning.
---Do you mind if I open the door ? --- ____________.