6th grade B C Present continuous

https://agendaweb.org/verbs/present-continuous/index.html

https://agendaweb.org/exercises/verbs/present-progressive.htm

https://agendaweb.org/exercises/verbs/present-continuous-2.htm

https://agendaweb.org/exercises/verbs/present-continuous.htm

http://www.english-room.com/grammar/presentcontinuous_1.htm

http://www.englishmaven.org/HP6/Present%20Tense%20Exercise%2014.htm

https://www.englisch-hilfen.de/en/exercises/tenses/present_progressive_auxiliaries.htm