---I must be off now, or it will be too late to see Tom.-? Do you really want to see th

---I must be off now, or it will be too late to see Tom.
--- ? Do you really want to see that dull boy?
A. For him
B. Why so
C. For what
D. So what

A. For himB. Why soC. For what(答案→)D. So what解析：考查交际用语：A. For him 为了他，B. Why so为什么这样？C. For what为什么D. So what那又怎样？句意是;--我得走了，否则就太晚了看不见汤姆了。那又怎样？你真的想见到那个讨厌的男孩吗？选D。

这个解释是对的