When the rebels attacked Mogbwemo, Ismael Beah<span> was away in another town called "Mattru Jong" with his brother, Junior & their friend Talloi. They went there to take part in a talent show. This is from Jourdan Baldwin's work entitled "A Long Way Gone" which was based from the Sierra Leone civil war.</span>
Answer:
a. on
b. I don't think here a preposition is needed as "This is the key to my room" is a complete sentence.
c. in
d with
Hope it helps!!
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