Ⅰ、1 - 5 D B A E C
    Ⅱ、A
    doing morning exercises
    having English class
    eating lunch reading a book
     B
    1、He's eating lunch.
    2、She's reading a book.
    Ⅲ、1、doing morning exercises
    2、reading a book
    3、listening to music
    4、eating lunch
    5、singing
    Ⅳ、1、Who
    2、Where
    3、Who
    4、What
    5、When
    Ⅴ、1 - 5 F F T T F