Every year students in (17)______ countries learn English. Some of these students are young children. Others are teenagers. Many are adults. Some learn at school. Others study by themselves. A few learn English just by hearing the language in films, on television, in the office or among their friends. But not many are lucky enough to do that. Most people must work hard on their lessons to learn another language.

Many boys and girls learn English at school because it is one of their (18)______. They study their own language, mathematics and English. In England, America or Australia, many boys and girls study their own language, (19)______  is English, mathematics and another language, perhaps French, German or Spanish.

Many adults learn English because it is (20)______  for their work. Teenagers often learn English for their higher studies because some of their books are in English at the college or university. Other people learn English because they want to read newspapers or magazines in English.

Read the following passage and choose the word (A, B, C, D) to indicate the correct word or phrase that best fits each of the numbered blanks.

Every year students in (17)______ countries learn English