补全对话。

A: Hi,  Li Lei, come and  1._____ soccer with me.

B:  Sorry, I can't.I 2_____  3_____ do some washing first.

A: Oh, do you have to?You 4_____ do it after supper.

B: Well, I'm afraid not.Yesterday my mother asked me to 5_____ my clothes.

A: All right, I'll ask Tom to go with me.Is Tom  6_____ home?

B: Yes, he is. But he can't come today.His mother is ill.He 7_____ 8_____ go to the hospital

    to 9_____ 10_____ his mother.

A: Oh, dear! Everyone is so 11_____. Well, I have 12_____ go home and do homework.

公路发油台罩棚防雷引下线不少于（）根，罩棚接地电阻不大于（）Ω。