Hello, distance learning is something completely different for almost everyone, from students to teachers to parents, and even administration. Some students don't have the adequate devices which makes it challenging. I feel like most teachers are understanding in the fact that they understand that some students don't have the available resources or like you mentioned their parents aren't around due to work. Since distance learning is new for everyone, teachers should and probably are extending due dates and trying different approaches to help these students, like communicating with them at different times of the day when parents are available. Teachers are there to help the students out to the best of their abilities.