-- what's his brother -- he is a teacher he --- maths at a school

问题描述:

-- what's his brother -- he is a teacher he --- maths at a school
a\ taught
b\ has tought
c\ teaches
d\ will teach
请您说明理由好吗?

答语:他是一个老师,
所以后半句说的是:他在学校教书.
使用一般现在时,第三人称单数形式,
即:teaches


选择C