Teacher - How to check if the students have read/done their homework

a) Homework with follow up questions:
If the teacher assigns the students homework with follow up questions, the teacher can see the students' answers in the Results. The results give the teachers feedback about the homework. Whether it's been done or not and which students have done it. How to review students answers and results

b) Simple text homework with no follow up questions:
The teacher assigns a simple text homework like "Learn the Raven poem by heart" or "Work on the math problem on page 35". How can the teacher check if the students have done the assignment?

When the student finishes the homework, the student should flag it as "Done". In the Results the teacher can see which students have flagged the homework as "Done".
Student - how to remove done homework from the list of homeworks/how to flag the homework as done

c) Homework with attached file - a study material:
In the results the teacher can see which students have opened the homework, downloaded the file.

The student Kelly Miller (100%) - has open the homework and downloaded the file.

The student Natalie Fox (50%) - has opened the homework but has not downloaded the file.