从括号中选出一个填空。
How ________ you? (am, is, are).
What ________ this in English? (am, is ,are)
What color is the pen? It ________ red. (am, is ,are)
What’s this? It’s ________ orange. (a, an )
What’s this? It’s ________jacket. (a, an )
There is ______ “u” in blue. (a, an )
______ you Number Seven?(be)
_____ am a student. ______ name is Mary.(I)