how to do what to do用法 在 [問題] what to do 和how to do的用法? - 看板Language - 批踢踢 ... 的評價 Tom found himself in trouble, and he didn't know ______. (A) what to do (B)how to do 我想請問這題要選A還是B呢? 因為如果還原成what he should ... ... <看更多>