How much are these shoes? _________ twenty dollars.
There was _____ woman in the room, sitting and looking at me in the dark.
John ishonest boy and good at makingairplane model.
---Listen! Helen is singing in the next room. ---It ____be her. She has gone to Beijing.
We ______ for a long time. Shall we play for a while?
--Help! Help! There is a big snake(蛇) near the house. ---____afraid. It will go away later.