15.She was lifting handfuls of fine sand and letting it pour __________ her fingers.
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.