19.03.2018

https://pronuncian.com/linking-same-continuous-consonants

https://www.englisch-hilfen.de/en/complex_tests/simple_present_progressive1/index.php

https://www.ego4u.com/en/cram-up/grammar/present-progressive/use/exercises?use02

http://esl.fis.edu/grammar/multi/pcwill.htm