maybe i watched the play many years ago,but i can hardly/really/easily remember it选择哪个，原因

hardly 表否定
前半句 Maybe I watched the play many years ago 意思是：“也许我在很多年前看过这部话剧",后半句想表达的是"但是我几乎不能记起来"
其他两个选项都是表肯定。