11.   She opened the book to the middle and began to read.

12.   He opened the book and found a phrase.

13.   He smiled across at her, and as she opened her book at the Prologue, she smiled quite sweetly back at him.

14.   I open the book at random.

15.   Is there any point in opening a book on who our Howard will drop to make way for rodders.

16.   We need now to open our books.

17.   She opened the book, but the susurration of the river, the birdsong, and the distant hum of voices, made her close her eyes.

18.   Opening the book purely at random is to discover that most human activities appear to be the subject of superstition.

19.   These include opening books at random.

20.   It is a bit difficult to tell what lies in store when one opens a book at random and finds a section on opening books at random.