... 97 8-0 -0 7-1 7708 5-9 MHID 0-0 7-1 7708 5-2 e-ISBN 97 8-0 -0 7-1 7708 6-6 e-MHID 0-0 7-1 7708 6-0 Library of Congress Control Number 2012931072 McGraw-Hill, the McGraw-Hill Publishing logo, Practice Makes Perfect, ... indicate nonstop activity are around-the-clock or twenty-four-seven (twentyfour hours a day, seven days a week) I get telephone calls around-the-clock He works twenty-four-seven, so I hardly ever see ... 161 v Preface Practice Makes Perfect: English Conversation is designed to give you practice with the vocabulary and structures that are most often used in common types of infor mal conversations...