牛津上海版（深圳用）英语三年级上册Unit 9基础练（选词填空）

It (is/ are) a schoolbag.

This is (a/ an) old desk.

(My/ I) pen is 4 dollars.

(Is/ Are) this a ruler?

(These/ This) are pens.

Is (this/these) a book? Yes, it is.

Is this his pen? No, it (is/isn't).

Are these my rulers? Yes, (they/it) are.

He is (in/on) the living room.

The book (is/are) on the table.