Focus on Grammar 4, Third Edition An Integrated Skills Approach Welcome to the Focus on Grammar 4 Companion Website. Student Resources Internet Activities There are Internet activities for each unit of the book. Your teacher will assign the Internet activity. The Student Resources contain the Student Worksheet for the activity. Please select a unit in the "Student Resources" navigation area to the left to download the Student Worksheet. Note that the Student Worksheets are in PDF format. Click here to download the free Adobe Acrobat Reader, which is required to read these documents.