What grade is Andy in 与Which grade is Andy in 的区别是什么?
问题描述：
What grade is Andy in 与Which grade is Andy in 的区别是什么?
答
what grade is Andy in? 安迪在几年级?这是通常的用法.
Which grade is Andy in ,grade 1 or grade 2? which 是选择疑问句,后面要加上选项.