[10]I’ll leave it./やめておきます

[5]headed to〜/〜に向かう

[15]I’ll take it./これにします

[21]I’ll leave it (up) to you./あなたに任せるよ

[8]It doesn’t look good on me./私には似合いません

[16]BOGO/Buy One Get One

[7]just in case/念のため

[30]Can I have water without ice? / 水を氷なしでください。

[25]I have a hangover. / 二日酔いです。