(  )14. You mustn’t forget ______ your book when you come here tomorrow.

A. to bring      B. bring      C. to take     D. take

(  )15. Many visitors come to Beijing because it is ________ city.

A. so a beautiful                B. very a beautiful

C. such beautiful                D. quite a beautiful

(  )16. —________ you ever _______ to Hone Kong ?    — Yes, twice.

A. Have; gone                    B. Have been

C. Do ; go                       D. Were; going

(  )17.—Listen ! Helen is singing in the next room.

— It _______ be Helen. She has gone to Beijing.

A. can’t      B. mustn’t      C. may     D. should

(  )18. The classroom ______ every day.

A. should clean              B. should be cleaned

C. should cleaned            D. should be cleaning

(  )19. It is bad for your eyes ________ computer games too much .

A. plays      B. to play     C. play     D. to playing

(  )20. The woman _____ is singing in the hall is our teacher.

A. what B. which    C. who     D. whom