... Schrampfer Understanding andusingEnglishgrammar / Betty Schrampfer Azar- - 3rd ed.p. cm.Includes index.ISBNO-13-958661-X1. English language—Textbooks for foreign speakers. 2. English language Grammar Problems, ... tree.Rita stood under a tree when it began to rain.Present and Past, Simple and Progressive 27 UNDERSTANDING AND USING ENGLISH GRAMMAR Third Edition AcknowledgmentsThe second edition of ... of the contributing writers for the Understanding andUsingEnglishGrammar Workbook, Second Edition: Rachel Spack Koch,Susan Jamieson, Barbara Andrews, and Jeanie Francis. Some of the exercise...