将下列对话补充完整.（每空一词）

将下列对话补充完整.（每空一词）
A: Hi, Mike. Why are you walking 小题1: this ? What`s wrong 小题2: you.
B: I fell down last night.
A: I `m sorry to hear that! 小题3: you hurt yourself.
B: Yes, a little.
A: But why did you fall down ?
B: We played a game last night, and I 小题4: the chair.
A: Too bad. Don`t worried. Let me help you.
B: It`s very kind 小题5: you.