All you need to d☆ ☆☆☆☆ ...
All you need to do when preparing for big exams is (to) study hard and do enough practices. 通常這種句子母語人士會省略掉to,是由於有do的關係,有強調的作用,但如果這邊動詞不是do,後面的to就不能省略,例如:All I want is to win the game.
37. All you need to do when preparing fo..-阿摩線上測驗