___________ you've got a chance, you might as well make full use of it.
—Do you know how people greet each other in the Middle East? —You can expect to be_______ when you meet someone.
I feel it _____ that I can make a speech _____ my school.
Come and see me whenever ______.
________book you choose on the shelf __________ our school library.
It will be many years _____ he turns ______engineer.