选词填空
用方框中所给单词的适当形式填空，每词仅用一次（每空一词）。

hero,  die,   medicine,   shut,   aloud

He ______ his book and went out for his lunch.
Linda wants to be a doctor when she grows up, so she is going to a ________ university.
Mao Zedong and Zhou Enlai are both ______ in my heart.
His dog has been ______ for three years.
Please read the letter _______ so that everybody can hear.