---Could I have a window seat ? ---All right. Your flight _____ boarding at Gate 18 at 2:15.
I have many friends,some re teachers.
The plane ________ when I arrived at the airport.
_____ is a possibility _____ Tom will get first place in the long jump.
He is ________ experienced teacher in our school.
My best friend who _______ a rich man two years ago has a baby now.