—He may be in the classroom, I think.—No, he _______ be in the classroom. I saw him go home a minute ago.
---Where is your English __________ desk? ---It’s in the classroom.
___________ two libraries in the school?
Some ________ are in the playground. They are very happy.
---What do you need? ---I want to buy ___________.
We2000 words in the past 3 years.