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