4.补全对话。
课间,同桌之间愉快地聊天。请选择合适的句子补全对话。
A. It's a banana. B. I can't find my eraser.
C. Do you like my picture? D. What are these?

Touch it. What's this?
Hear the sound. (2)______
(1)______
They're ducks.
(3)______ Can I use your eraser?
Look! (4)______
No problem.
Yes, I do.
go swimming去游泳

1. A
2. D
3. B
4. C