将横线中的填空
What'rethoseTheyhave3eyes,red,yellowandgreen.
oh,theyare-------.
Butwhydotheyhave3colours?
Becausethereare-------.Look!it'saredlight.Let's------!
oh,Isee.Stopataredlight.It'syellow.Canwego?
No,-----atayellowlight.It'sgreennow.Let's----.
Sothesearethe---------.Iremembernow.