1．[2015·福建高考]－Sorry, Mum! I failed the job interview again.
－Oh, it's too bad. You________ have made full preparations.
答案：should 根据句式结构可知，此处考查情态动词用法，结合语义，可知此处表示“本应该做而未做的事”，故填should，暗含对对方的责怪。
2．[2015·陕西高考]You________ feel all the training a waste of time, but I'm a hundred percent sure later you'll be grateful you did it.
答案：may 根据句中的“but I'm a hundred percent sure later you'll be grateful you did it”可判断出，表示对前面情况的一种推测，所以用may“也许，可能”。
