Each student should have their own sheet with their name on it. Keep all of the sheets in a binder in a place that is easily accessible for the students. If a student is missing their HW assignment, they will need to fill out one row on the sheet with their name. When they turn the assignment in, the students will fill out the date and the teacher can sign off that they received it. It's a great tool for parent-teacher conferences!
I teach 6th grade and have almost 100 students. I have 4 separate binders - one for each class.