毎日, まいにち
Adverb
every day
その犬に毎日食べ物をやって下さい。
一生懸命, 一生けん命, いっしょうけんめい
NA-adjective, Adverb, See 一所懸命, yojijukugo
very hard, with utmost effort, with all one's might, for dear life
もっと一生懸命勉強すべきだったのに。
に
Particle
1. at (place, time), in, on, during
2. to (direction, state), toward, into
3. for (purpose)
4. because of (reason), with
5. by, from