My brother ____ often late for school. A.are B.arrive C.arrives D.be的答案与解析

C
My brother应用单三人称，因此排除A，B
又此句若用be动词，应用is因此排除D。
综上，选择C

My brother is often late for school．所有都不对。。

AB肯定不对。似乎C还说得过去

怎么觉得应该是 is 但是答案里没.

C应该是