She always does her homework, but she often forgets to hand it in.
She does her homework every week, but she forgets to give it to you.
ーShe always does her homework, but she often forgets to hand it in.
「彼女はいつも宿題をやるのに、提出し忘れるんです」
to forget to hand ... in で「…を提出し忘れる」
ーShe does her homework every week, but she forgets to give it to you.
「彼女は毎週宿題をするのに、提出し忘れます」
to forget to give ... to you で「あなたに…を渡し/提出し忘れる」
ご参考まで！
カナダ 
