. —Why are you so frightened—I saw two dark _______ enter the building.

Wearing blue or sleeping in a blue room goodfor our .

May I go and play with Dick this afternoon,Mum— No, you can’t go out _____ your work is beingdone.

Hurry up. The bus is coming.— Oh， no. We mustn’t cross the street ________ the traffic light is green.

The word “run” has “r” and “u” in it .