Choose the answer which correctly completes the sentence. he lived at the top of an old house the attic had been converted into a flat. whom which where that

He lived at the top of an old house WHICH the attic had been converted into a flat

Hmm...I think which becaus whom used with a nounТак ладно, правильно which-который, это точно! Из недр моего глубокого мозга!