Progressive+verbs

http://study.com/academy/lesson/what-is-the-progressive-verb-tense-definition-examples.html#lesson

http://4thgradeela.weebly.com/progressive-verb-tenses.html

http://www.eslgamesplus.com/verb-tenses-interactive-grammar-game-for-esl-jeopardy-quiz-game/

https://www.quia.com/cb/88663.html