— I visited the Purple Mountain Observatory last Sunday.—______ Why didn’t you tell me earlier?
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 Iknow her last name.