I would say
C) Simple yes/no questions.
They have the same endings except in the nosotros and vosotros forms.
Answer:
By acting in the Boxer Rebellion, the United States proved they would use force to promote their own business interests.
Explanation:
i hope it helps :) srry if im wrong :/
A flat character is someone is unchanging throughout the story, in other words, the character is Stagnent.
