补全对话.A:Goodmorning.B:Goodmorning.Whatareyoudoingnow?A:I'm___
B:Running?What'swrongwithyourbike?
A:It's___.Canyoumenditforme?
B:Yes,Ican.Butlet's___gamesfirst.
A:OK.Let'stryour___.___thelevelonthemachine!
B:You'restrong!