Compléter COMPLETION. Part 4-AVersion en ligne Lea el texto de la parte inferior y seleccione la palabra correcta para cada espacio. / CHOOSE the correct WORD to COMPLETE the PARAGRAPH. It is necesary to understand the idea of the whole text. par Maria E. O 1 described when most While couldn't drinking among since COFFEE Coffee is popular around the world . ( 0 ) Over the past centuries , few subjects have been as carefully studied as coffee . Its ( 9 ) important component is caffeine and it has lots of benefits . Coffee has been well - known ( 10 ) the beginning of the 14 th century , ( 11 ) Sufi Yemenis started using coffee to stay alert during special activities . It became a popular medicine ( 12 ) Europeans in the 1600s . Caffeine was first ( 13 ) in the 1800s by Ferdinand Runge , a doctor that found out some effects that coffee has on people . Some people say ( 14 ) coffee isn't good , but doctors say you ( 15 ) believe this . Thanks to caffeine you don't get hungry . Coffee can also reduce headaches and blood problems . ( 16 ) many people believe coffee is bad , studies show it is good for your heart .