nihongono shukudai ga arimasen
(宿題) Ben-kyo Benkyo is how you say homework in Japanese.
Yes.
No, you can say "I have a lot of homework." Or "I have to much homework"
yes
The answers to your homework.
Say you didn't complete your homework. The answer is implied.
"Homework" is always singular, so you would say, "Brian and Emily have finished their homework." If you want a plural to refer to homework from different classes, you can say "homework assignments."
they say that homework students have isn't very much.
Yes, it is correct to say "homework was sent home" to indicate that students were given assignments to complete at home.
Umukoro means homework in Kinyarwanda.
you may not (watch tv) - (terubi o mite) kamoshire masen don't/stop - dame i do not (do homework) - watashi WA (shukudai) o shimasen
Causative statements are expressed differently in Japanese, and as such there is no exact replication of the word "would". However, if you wanted to say something like "I would go if I didn't have this homework" you could say たくさん宿題があるので、行けません (takusan shukudai ga aru node, ikemasen; I have a lot of homework, so I can't go).