https://pronuncian.com/deletion-linking-the-dropped-t
exercises to revise
https://www.englishpage.com/gerunds/gerunds_infinitives_3.htm
https://www.englishpage.com/gerunds/gerunds_infinitives_4.htm
https://pronuncian.com/deletion-linking-the-dropped-d
https://www.perfect-english-grammar.com/present-simple-exercise-16.html
1 https://agendaweb.org/exercises/verbs/present/affirmative-negative-questions-write
2 https://www.english-room.com/grammar/presentsimple_2.htm
https://pronuncian.com/linking-same-and-similar-blocked-consonants
2b 
