duo's autocorrect engine does not work very well, so if you omit the "the" before dinner then the engine would not recommend the "our". try it for yourself.
Duolingo Tips - Routines 2
después are followed by a noun, be sure to
add de before the noun.
In English, we "do" homework in the role of a student. To "make" homework wouldn't sound right at all.
Your question is so brief, I can't tell if you might be thinking of the role of a teacher, but even in that case, I don't think anyone would say we "make homework." The after dinner reference, along with 1st person plural is a strong indicator that it's not a teacher saying this anyway.
Thanks! What do you mean? " The after dinner reference, along with 1st person plural is a strong indicator that it's not a teacher saying this anyway."
That link you provided is a very good explanation of do vs make. Thanks!
I mean that it's very common for children to do their homework after dinner, and there are often multiple children in a family who all need to do their homework before bed. Therefore, I would guess this sentence is being said by a child rather than a teacher.
I'm not sure when teachers write out homework assignments, but I imagine it varies a lot, and is something done as individuals rather than a group activity, so a teacher wouldn't say "Hacemos..."
Why not "let's do homework after dinner?" That is still the nosotros form.