（）I have 3 _________.
A. pencil B. pencils
（）I have 2 _________.
A. crayon B. crayons
（）I have an _________.
A. eraser B. pencil
（）I have a _________.
A. ruler B. rulers
选择I, you, he, she, they填空。
（1）How are _____ ? I’m fine.
（2）What’s your brother? _____ is a cook.
（3）What’s your name? _____ am Helen.
（4）_____ is my friend, Su Hai.
（5）What are these? _____ are robots.