11.   Teachers who use the guides are not alone in praising them.

12.   U.S. News has used the guide to lift its circulation in August, when newsstand sales are historically poor.

13.   Cuthbert said the course this year began using guides to direct golfers through the checkered fairways and sloping greens.

14.   Many enthusiasts have little equipment and try to save money by not using a guide.

15.   The fact that Khoo used guides throughout his adventures has caused some mountaineers to scoff at his accomplishments.