Это не предложения абы какие, это у вас знания пока именно такие. What rock has you crawled out from under?
По другому написать можно, но
Интересная статья на тему (как раз из неё я взяла цитату):Most attempts to avoid stranding or deferring prepositions in the following examples end up sounding over-formal, awkward, or like Yoda in Star Wars:
(1)STRANDED PREPOSITION (2) PREPOSITION BEFORE NOUN OR PRONOUN
(1)Gail has much to be happy about. (2)Gail has much about which to be happy. [over-formal]
(1)Martin persuaded Lucy that there was nothing to be frightened of. (2)Martin persuaded Lucy that there was nothing of which to be frightened. [over-formal]
(1)The house hadn’t been paid for, so they had to sell it. (2)Paid for the house had not been, so they had to sell it. [not good English]
(1)Who were you talking to? (2) To whom were you talking? [over-formal]
(1)The tennis match was rained off. (2)Rained off the tennis match was. [not good English]
(1)He wondered where she had come from. (2) He wondered from where she had come. [over-formal]
(1)She often said things that were inappropriate, but think of the pressure she was under. (2) She often said things that were inappropriate, but she was under a great deal of pressure. [less emphatic]
https://blog.oxforddictionaries.com/201 ... positions/...there are four main types of situation in which it is more natural to end a sentence or clause with a preposition:
passive structures (she enjoys being fussed over)
relative clauses (they must be convinced of the commitment that they are taking on)
infinitive structures (Tom had no-one to play with)
questions beginning with who, where, what, etc. (what music are you interested in?)