Which sentence shows the correct use of a common homophone? - my dog was unable to relocate it's buried bone. - our old oak tree has dropped all of it's leaves. - the overplayed song has lost its appeal for me. - its been too many weeks since it last rained.

Out of the four, the sentence that uses the correct use of homophones is: Its been too many weeks since it last rained. In this sentence, the homophones found are 'its' and 'weeks'. Homophones are two or more words having the same pronunciation but with different meanings.