Who can help me?How can I do it?=谁可以帮我?我怎么做?
Whom should i help?What should i do?=我应该帮助谁?我应该干什么?（这种英语用法比较难）
Who should I ask for help?What should I do=我应该找谁帮忙?我应该怎么办?
Who can help me?How can I do it?=谁可以帮我?我怎么做?
Whom should i help?What should i do?=我应该帮助谁?我应该干什么?（这种英语用法比较难）
Who should I ask for help?What should I do=我应该找谁帮忙?我应该怎么办?