【题目】你问我答,选—选。(把正确的序号写在横线上)
1.A:What colour is your pencil box? B.__________
①It's blue. ②It's a window.
2.A:How many rulers do you have? B:___________
①Nine crayons. ②Nine rulers.
3.A:What's this? B:___________
①It's "M". ②Oh, yes.
4.A:It's "Y". B:___________
①No, it's "V". ②Open it, please.