(A) nightmare

　　(B) expectation

　　(C) sleep

　　(D) misconception

　　320. "After my first meeting with Langston Hughes I vowed I would write a book about him for children someday.

　　The word "vowed" is closest in meaning to which of following?

　　(A) confided

　　(B) believed

　　(C) denied

　　(D) promised