补全对话。

A. It's sour! B. yum! C. What's that? D. It's a pear. E. Is it a pear?

L: What is this?

M: No, it isn't. It's a strawberry.

L: What's this? Is this a pear?

M: Yes, it is. It's sweet.

L: Oooh,

L:

M: It's a lemon.

M: No! No!

L: Yuk!