To make our city more beautiful, rubbish _________ into the river.

You _________ drive on when the traffic light is red.

 ---Could you please come to the museum with me this afternoon?---Sorry, I ______ . I have to take a piano lesson at 2 pm.

 If you _____ smoke, please go outside.

 Look at the “No parking” sign. You _____park your car here.

 After you read the article “Why fast food is slowly killing you”, you         stop eating fast food. 

---Is the man over there Mr. Brown?----It ______ him. He has gone to Brazil to watch the 2014 FIFA World Cup.

--Must we stay in the classroom and finish all the homework?--No, you______. You can take it home.

 -Must I send my uncle an e-mail now, Dad? -No, you ____.You____ do that after you finish your homework.

  --- What will the weather be like tomorrow? --- It ______ be rainy, cloudy or sunny. Who knows?

--- Have you decided which club to join?--- Not yet. I __________ go to the Music Club.

--- Are you coming to Jeff’s party? --- I’m not sure. I _______ go to the concert instead

—Let’s go to watch the cosplay show! —Sorry, I       . I have to go to my guitar lesson. 

---Must I hand in my homework now?---No,you__.You can hand it in tomorrow.

— Must I finish my homework now?— No, you ________. You can go home now.

－It’s Sunday today, so you        get up so early.－Yes, I can have a good rest.

— Listen! Helen is singing in the classroom.—It _______ be Helen. She has gone to Shanghai.

—He ____be in the classroom, I think.—No, he_____ be in the classroom. I saw him go home a minute ago.

---Be quiet! Mr Smith is coming. --- Don’t worry. It__________be him. Mr Smith is much taller.

 — I’m thinking of losing weight these days. — Oh, you _______ be mad. You’re only 45 kilograms at the most.