________ in Tibet for ten years, he has been accustomed to the life and the climate there.
Bob ________ with us together since he came to our school.
When I came into the teacher’s office, he ________ on the phone.
Tony decided to study abroad _______ he knew he would meet many difficulties.
--- We want to sit at the table near the window. --- I am sorry, but it _______ already.
In some parts of the world, tea _______ with milk and sugar.