I am assuming that horses' is plural.
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If it were singular, it would be horse's.
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Sinces is it written s',it is plural.
Answer: i think it is a
Explanation: if it is wrong sorry
Answer:
みなさん、こんにちは塚佐公子です。みなさんにお会いできてとても嬉しいです!
Explanation:
c:
The main idea of this passage is the question to whether dragons exist or do not exist.
Maybe just retype what it says