We should try to study harder (改为一般疑问句) ____ ____try to study harder ( 句意是:)

问题描述:

We should try to study harder (改为一般疑问句) ____ ____try to study harder ( 句意是:)
我用了shall ; we 正确答案是_____.

不对.we要改为you.
Should you try to study hard?你们应该努力学习吗?Should 能否改为 shall???不可以。为什么??帮我消除疑虑shall一般只与第一人称连用。