?别客气

Don't mention it(别客气)是回答别人感谢时的答语；Take your time(别着急；慢慢来) It depends(看情况)是对别人的提问不确定的回答。

?不用谢

... be mentioned in dispatches (英)在战报中受到表扬 don't mention it 不用谢；没关系 mention someone in one's will 将遗产赠给 ...

?不客气

... at the newsagent's 在报刊亭 Don't mention it. 不客气；没关系 specifying particular things 详细说明具体物品 ...

?别提了

... at first首先；开始 look out (for)小心 Don't mention it不客气；别提了 look down向下看 turn on打开 come on赶快 ...