Jim and Tony are in Grade Seven.对in Grade Seven提问
问题描述：
Jim and Tony are in Grade Seven.对in Grade Seven提问
答
What grade are jim and tony in?
答
WHERE IS JIN AND TOM IN?
答
Which Grade are Jim and Tony in?
这是强调Jim和tony所在的年级,介词一定是用in的
Where is的话,问的就是地点啦~
答
Which grade are Jim and Tony in?