（２）と（３）が正しくて、（１）の使い方は通常しません。 （２）が一番自然です。（３）は少し強い表現です。 (2)and(3) are correct,but (1) is wrong. (2) is more natural than others.(3) is right but strict(or server) expression. The more use Kanji, the more serious(or formal), on the opposite the more use Hiragana, the more soft.