Ⅰ、1-5:C D G A B
Ⅱ、6-10:C B A C B
11-15:D B C A C
Ⅲ、16-20:B D C B B
Ⅳ、21、Yes,he does
22、1t's 65454379
23、No,it isn't
24、It's red
25、It's Wood