---Whose book is this?  ---It ______ be Linda’s. It has her name on it. 

____ I fill in the application form right now, sir? No, you needn’t. You can complete it this afternoon.

——Dad, must I finish my homework today?------No, you         . You may do it tomorrow.

— Shall we meet at the station at 8 a.m.? — In fact we _________. The train _________ until 10 a.m..

—Shall I tell you about it?      —No, you _______. Sandy has told me already.

The teacher says we _____read ______ comic books.

Boys, you ______ be sitting in this room. It is for your teachers only.

If the green light doesn’t come on, you ______ go across the street.

The man ______ be my father. My father is much taller.

---Where’s Lucy? ---I’m not sure. She ________ in the school library.     

--- _______ I come back before 6 o’clock?---No，you _______．But you _______ be back later than 7 o’clock．

I hear you’ve got some new Australian coins._______ I have a look?

—Must I clean the blackboard now?    —No, you _______ clean it later.

Must I clean my rabbit’s hutch every day? － No, you __________.

You _ to the meeting this afternoon if you have something important to do.

——Must I park my car behind the cinema?——No, you    . You     park it here.

—Shall we go to visit Mr. Wang now?—Mr. Wang________here now. He left for Shanghai by air this morning.

---Listen! Someone is knocking at the door. Who _____it be?---It _____be Tom. He phoned to visit me this evening.

Susan’s parents have bought a large house with a swimming-pool. It ____ be very expensive.

---- Is Ann knocking at the door?--- No, it ______ be Ann. She has gone to Beijing.