_____ has been introduced to the students to help them make progress.
He has lived at for 30 years.
The book is of great valuecan be enjoyed form it until you have a deep understanding of it, however.
She studies ___ medicine before she turned ___ writer.
His uncle gave him books to read, but after a page or two he would put __book down and pick up__ new one.
A non-smoker can hardly imagine__ pleasure of having__ smoke after a meat.