Câu hỏi:

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the  correct answer to each of the questions from 43 to 50.

          Langston Hughes was one of the greatest American writers of the twentieth century. He was born in Joplin, Missouri, and moved to Cleveland at the age of fourteen. Four years later he went to Mexico and spent one year there before attending Columbia University in New York. For a few years after that he roamed the world as a seaman, visiting ports around the world and writing some poetry. He returned to the United States and attended Lincoln University, where he won the Writer Bynner Prize for undergraduate poetry. After graduating in 1928, he traveled to Spain and to Russia. His best novels include “Not Without Laughter” and “The Big Sea”. He wrote an autobiography in 1956 and also published his collections of poetry then. A man of many talents, Hughes is one of the most accomplished writers in American literature history.

When did he travel to Spain?