I don’t know if he _____here.If he ______tomorrow,I will tell you.

Have you got any books on English grammar? I want to borrow______.Yes, here you are. But you must return it by Friday.

You will find ______ useful to learn even a little English.

There’s somebody at the door. Who ____ it be? Is it the postman? — No. It ______ be him. It’s just seven o’clock. It’s too early.

There is a big bookstore close our school.[ ]