Trees can stop the sand _____ towards the rich farmland in the south.
The boy is Bob Green. His _________ is Bob.
---What color is that pen?--- It’s ________ green. It’s ________ green pen.
_____a cat. We do not know_____ name.
______ these your _________?A. Are, pencil B. Are, pencils C. Is, watch
Jim and I know her last name.