Hi&nbsp;Chang-Ling:<br /><br />I have uploaded your edited document and hope that you find the suggestions helpful. If you have any questions, please send a message to me via Editor World.<br /><br />This is an excellent paper and a pleasure to read. I've made more edits &nbsp;than were strictly necessary, knowing that you will choose which to accept and which to reject. Once or twice I even reverted to the original, because your version was better. It reads like a finished paper to me, and a very good one!<br /><br />Before sharing this document, please consider running Document Inspector. To do this, click File/Info/Check For Issues/Inspect Document on the Microsoft Word menu bar.<br /><br />Microsoft Word displays tracked changes and comments by default. <br /><br />To review the edited document without showing tracked changes, click Review on the Microsoft Word menu bar. Then select Final: Show Markup and click the drop-down arrow. Choose Final. To show tracked changes again, click Final: Show Markup.<br /><br />Best wishes - TypeRighter (aka George)<br /><br />Thanks for sharing your essay. I learned a lot.<br /><br />I am usually available for editing between 6:00 am and 10:30 pm. If my status is set to unavailable, you can still send a message to me via Editor World.