选择方框中的单词填空，完成对话，把序号写在横线上。

①under    ②where's    ③Don't   ④in      ⑤eat ⑥isn't      ⑦ I'm      ⑧No     ⑨like     ⑩about

A: Hello, Helen!

B: shout.

A: Would you a sweet?

B: , thank you.

A: What a pie?

B: No. Don't in the classroom.

A: sorry. Helen, my pencil case?

B: Is it your schoolbag?

A: No, it . Aha! Look, it's the English book.