【用戶】Jill Wu
【年級】大一下
【評論內容】brush up on+科目: 溫習If you're going to France you'd better brush up your Franch.
【用戶】Viva Lin
【年級】高三上
【評論內容】(D) give up on1. PHRASAL VERB对…绝望;对…不抱希望 If you give up on something or someone, you decide that you will never succeed in doing what you want to with them, and you stop trying to.