Hi all and thanks for reading and helping me;<br/><br/>I have heard a "rule" that says that you can not end a sentence by using prepositions; and I'm wondering if this one is always true.<br/><br/>If so, is this sentence wrong?:<br/><br/>The book you gave me is not the one I asked you for.<br/><br/>This one ends in -for; should I replace it for another grammatical structure not ending in preposition?<br/><br/>Thanks in advance!!!