My brother and sister often ____ with each other.(打架)help me!要不要用三单?
问题描述：
My brother and sister often ____ with each other.(打架)
help me!要不要用三单?
答
fight
不用。因为是两个人。
答
不要 因为My brother and sister 我的兄弟姐妹是2人以上 是复数 所以用fight