This is an activity to do with your students during the first days of class. It is very important to communicate in the classroom using English and this worksheet helps them to use some sentences they can use in the class. They do the activities in pairs and I tell them to keep record of all classroom expressions we are using. They have a section in their notebooks called 'Classroom English'. I think it is a good 'back to school' activity. We write the sentences on large pieces of paper and put them on the walla to make them remember.