用所给单词的适当形式填空.We have learned () lessons and () lesson is the hardest.(nine)

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用所给单词的适当形式填空.We have learned () lessons and () lesson is the hardest.(nine)

用所给单词的适当形式填空.We have learned () lessons and () lesson is the hardest.(nine)
用所给单词的适当形式填空.We have learned () lessons and () lesson is the hardest.(nine)

用所给单词的适当形式填空.We have learned () lessons and () lesson is the hardest.(nine)
nine;the ninth

你是开中的吧?

nine
the ninth

nine
the ninth