The new research center will be set up was a wasteland 20 year ago.
Neither side is prepared to talk to_________unless we can smooth things over between them.
Though_________to see us, the professor gave us a warm welcome.
—Have you finished the book? ---No,I’ve read up to_________the children discover the secret cave.
my mother opened drawer to_________the knives and spoons.
Tom was about to close the window__________his attention was eaught by a bird.