That’s a pity! Please inform your teacher timely, either via mail, phone or message. Your teacher will let you know what material was covered in class and what the homework for the next week is. You may always contact your teacher with questions about the material covered.
Corona update. If you cannot attend a lesson in the classroom because you have symptoms of a cold, you can still attend online: let your teacher know no later than two hours before the lesson and she will send you a link to a video chat through which you may join the lesson.