hey, SAI ! what happened to you ?
oh,I've got a broken arm
me,too ! by the way,how did it happen ?
I was playing badminton when i strpped on a big stone and was out of balance
oh, that's bad
how about you ?
I crashed into someone when i was learning hoe to ride a bicycle
who did you crash into ?
my best friend
oh,what a terrible experience we had!
me too
balance