word formation (B2 szintvizsga) http://www.english-grammar.at/online_exercises/word-formation/wf053-sentences.htm
pyeongchang North Korean cheerleaders http://www.dailymail.co.uk/news/article-5432369/North-Korean-cheerleaders-sex-slaves-Kim-Jong-Un.html#v-5092051254578624576
key word transformation http://www.esl-lounge.com/student/first-certificate/fce-018-key-word-transformations-exercise.php http://www.esl-lounge.com/student/first-certificate/fce-020-key-word-transformations-exercise.php http://www.esl-lounge.com/student/first-certificate/fce-019-key-word-transformations-exercise.php