选择句子,完成对话

选择句子,完成对话
Tim:Mum, I helped lots of people today.
Mum:( 1)
Tim:Yes. First I helped Kate to find her discman in the school
Mum:Where did you find it?
Tim:(2)
Mum:And then?
Tim:On the way home , Itook a man's arm and we crossed the street.
Mum:(3)
Tim:No ,but he can't see.
Mum:Good for you.(4)
Tim:Oh ,no!It's at school.
Mum:Oh, Tim
A.Are you OK?
B.It was under my textbook
C.Where is your schoolbag?
D.Was he blind?
E.Was he old?
F.Really?