Ⅰ、1-5:D C B F E
Ⅱ、6-10:C B C C A
11-15:A D B A B
Ⅲ、16-20:C B A A B
Ⅳ、21、because of
22、F
23、大家都太害怕了,不敢进入房间。
24、Luckily,someone/somebody saved us.
25、He held his mother's right hand tightly(for the rest of the day).