There's a cheat you can use to get to the next level.

　　有種秘技，你可以用來(lái)到達(dá)下一關(guān)。

　　Philosophers did not use to make a distinction between arts and science.

　　哲學(xué)家過(guò)去習(xí)慣不把藝術(shù)和科學(xué)區(qū)別開(kāi)來(lái)。

　　I didn't use to like opera but my husband has converted me.

　　我過(guò)去不喜歡歌劇，但我丈夫改變了我。

　　I'm sorry, I've been no use to you.

　　對(duì)不起，我一點(diǎn)兒忙也沒(méi)幫上。

　　The contents of this booklet should be of use to all students

　　這本小冊(cè)子的內(nèi)容應(yīng)該會(huì)對(duì)所有的學(xué)生都有用處。