which sentence must be revised to eliminate the preposition at the end?\nthe museum had the throne where the…

which sentence must be revised to eliminate the preposition at the end?\nthe museum had the throne where the king sat on.\nthis is the beach umbrella we will be sitting under.\ni missed class, so i asked the teacher what we talked about.\nthe concert starts at two, so i told him to meet me before.
Answer
Brief Explanations:
Prepositions should not be at the end of a sentence in formal grammar. In "The museum had the throne where the king sat on", the preposition "on" is at the end and can be revised to "The museum had the throne on which the king sat". The other sentences also have prepositions at the end but this one is the most straightforward case for revision.
Answer:
The museum had the throne where the king sat on.