The new secretary is supposed to report to the manager as soon as she ___.
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.
At present, you do meet with some difficulty in English learning, but you will have a good knowledge of it.
No one knows the age of the old man wandering in the street all day, but judging from his appearance, he is in his sixties.