This document is a worksheet in English with questions about acne. The first question defines acne vulgaris as the most common type of acne in teens, which usually appears on the face, neck, shoulders, and chest. It asks why teens get acne, which is due to hormone changes during puberty that stimulate oil glands. The second question provides vocabulary definitions. The third question asks the student to complete sentences using the past simple form of verbs in parentheses. The fourth question involves a comic strip about a doctor's visit and using modal verbs like should, have to, and must.