____ you have the chance to go to university in the future, you must take it.
Is that a book on farming? If so, I want to borrow___.
.Who is making so much noise in the garden?__ the children.
.—Is there anyone who is gong the Great Wall?_______
Andeison entered the classroom, ____book in ___hand.
She studies ___ medicine before she turned ___ writer.