(陕西卷23). ----May I take this book out of the reading room?

   ----No, you        . You read it in here.                                        

  A. mightn`t          B. won’t           C. need’t           D. mustn`t

(09陕西卷)16. He must be helping the old man to water the flowers,        ?    

A. is he     B. isn’t he     C. must he     D. mustn’t he

（陕西卷12）. The cost of renting a house in central Xi’an is higher than ____ in any other area of the city.

A. that            B. this           C. it             D. one          

（陕西卷20）. John thinks it won’t be long        he is ready for his new job.                

  A. when              B. after             C. before            D. since

（陕西卷19）. His first book       next month is based on a true story.                       

  A. published           B. to be published    C. to publish         D. being published