Hence , German students will have to work harder , think much more and thus become even more skilled .
Hence , German students will have to work harder , think much more , and , thus , become even more skilled . Therefore , German students will have to work harder , think much more , and thus become even more skilled . Hence , German students will have to work harder , think much more and thus become even more skilled . Hence , German students will have to work harder , think much more and thus become even more skilled .
Hence , German students will have to work harder , think much more , and , thus , become even more skilled .
이 문장의 문법성을 개선하십시오: Hence , German students will have to work harder , think much more and thus become even more skilled . 산출: