21. Travel agencies claim they work in close ________ with the local authorities to bring tourism back to its former glory. 

A. reference             B. company          C. sympathy         D. cooperation

22. When reading a novel, be sure to consider the political and cultural context ________ the novel is created.

A. why               B. that            C. which            D. where

23. —Professor Li, how can my son develop his interest in literature?

—You may first ________ him to classical literary works.

A. devote                B. apply           C. expose          D. assign

24. —What is the matter with our school network?

—I don’t know. My computer ________ to the Internet in our office for a few days.

A. hasn’t linked      B. doesn’t link     C. wasn’t linked       D. hasn’t been linked