There are plenty of books in our library. You can       four at a time.

--Excuse me, ___________is it from here to the hospital? --It’s not far, about 20 minutes’ walk.

—_____will you stay here? 　　　 —Until tomorrow afternoon．

He said that he had met her two years _______.

The old man lives in a wooden house _____ , but he doesn’t feel_____       .