( )kate good at her school work?A,is B,are C,am

问题描述:

( )kate good at her school work?A,is B,are C,am

首先确定是be good at.
Kate是第三人称,所以选A

A,Kate为第三人称单数,所以相对的be动词为is
be good at (doing) sth擅长于某事