3. It’s a black bag .　　　　　 _________________________________.

2. I am a student.　　　　　　 _________________________________.

1. This is my pen .　　　　　 _________________________________.

10. The girl ____ some erasers.

9. It _____ three hands.

8. He _____ seven basketballs.

7.She ____ six volleyballs.

6.Tom and Mike _____ five ping-pong balls.

5.The boys _____ four soccer balls.

4.We _____ three computers.