Tóm tắt nội dung: Learn by doing. It's an old lesson, tried and true. And it's the tool this book is designed to give you. The 501 grammar and writing questions in this book will provide you with lots of practice. As you work through each set of questions, you'll be gaining a solid understanding of basic grammar and usage rules. And all without memorizing! The purpose of this book is to help you improve your language skills through encouragement, not frustration. Section 1: Mechanics: Capitalization...