–Excuse me,        I get back my umbrella, madam? –I’m really sorry. I thought it was mine.

--Jack, is this your jacket?--No, it _______ be my jacket. My jacket is black but this one is blue.

 -＿＿＿＿＿＿ you leave so soon?-Yes. I have to catch my plane.

---Listen! Is Kate playing the piano in the room? ---No. It _________ be her. She has gone to London with her parents.

—Must I finish the work today, mom ?—No, you ______.You can finish it tomorrow.

— I am going to spend my holiday in the countryside. — ________. The air there is fresh and the views are attractive as well.

You _______ write the poem down. Our teacher will give us a copy. 

---Someone is knocking at the door. Who may it be? ---It ______ be Tom. He is still in the school.

--- ______ I take some photos in the hall ? ---No, you ________.

-- _______I take some photos in the hall?   --Sorry, you_______.

A: ________ I go to the airport to see Uncle David off tomorrow morning, mum? B: No, you needn’t. You may join us if you want to.  

According to traffic laws, drivers_____ drive cars after drinking wine.

 -Look at the picture on the wall. It         be David's.-Yes, his name is on the first page.

You ___________ follow the traffic rules. Otherwise, it is dangerous for you. 

—May I use your computer, Mr WU?　　　—______．

— I’m a little tired. Let’s go to the zoo by taxi.  —We ________take a taxi. It’s not far from here.

--The man in a black suit _______ be our youth worker. -- I’m sure it _____ be him. I saw him in the laboratory building some minutes ago.            

 Whose  book  is that ?It   _______belong to Linda .Look !Her name is on it .

________I smoke   here ?----No. you can’t.

 Few weight-loss pills can help to keep people slim, _______?