"I forgot the homework."

Translation: しゅくだいをわすれました。

[DeanWright5]

should accept informal wasureta  '忘れた' as well

[snazan]

Does now (3/30/19)

[AdamScott794079]

I didn't forget it, my hat-seller ate it

[LajtaiLeve]

Hahaha, nice reference! :D

[TheGameArt1]

Lol. Does this hat seller happen to be a dog

[CarlGrover]

私の犬は宿題を食べました。

[deactivated user]

私のぼうしを売る犬はしゅくだいを食べてしまいました。

[Medusa747]

私の宿題は毒ので、犬は死んだ。

[Yuri.co]

You should use the passive in this case: 私は犬に宿題を食べられました。They have this thing called indirect passive where the action done by someone/something else affects the speaker. You would not translate that with a passive, but Japanese uses the passive because the damage was cause by something exterior.

[Shinobusagi]

Oh sure Duo... you "forgot" it. Never heard that one before.

[phimema]

My parrot ate it!

[John863934]

I thought Duo was an owl!

[RCLNerd]

宿題を忘れました。

[ConnorLawl1]

I didnt put in "まし" because i teach kids andbtgey always say "わすれた"

[ConnorLawl1]

And they
Not andbtgey ...

[Lern994301]

ぷっぷぅ ٩(๑`^´๑)۶ いいじゃん、「を」を入れなくても w

[Etiennera]

Should accept ちゃった