Articles – a, an, the or no article;
https://www.aut.ac.nz/__data/assets/pdf_file/0006/573990/Use-of-articles-handout-2015b-.pdf
http://www.lib.teicrete.gr/webnotes/sdo/english%20grammar%20course/exercises/articles.pdf
Gerund and Infinitive Pdf;
http://vslicey.cv.ua/attachments/article/213/Gerund%20or%20Infinitive.pdf
Tenses in English;
https://www.englisch-hilfen.de/en/grammar/tenses_table.pdf
http://samsoor.weebly.com/uploads/6/2/5/7/6257690/english_grammar_tenses.pdf
https://www.chabotcollege.edu/languagearts/esl/verb%20tense%20book–pdf.pdf
http://www.sz.uni-bayreuth.de/fileadmin/user_upload/Info-Dateien/test.pdf
http://kisi.deu.edu.tr/binnur.kavlak/ingilizce/belgeler/FreeEnglishGrammar.pdf
Conjunctions;
http://www.ramsey.k12.nj.us/cms/lib3/NJ01000326/Centricity/Domain/286/Comma%20Practice%20Packet.pdf
http://horarioscentros.uned.es/archivos_publicos/qdocente_planes/391041/conjunctions2.pdf
https://www.newcastle.edu.au/__data/assets/pdf_file/0006/74247/3-Conjunctions.pdf
Modals
http://www.bucks.edu/media/bcccmedialibrary/tutoring/documents/writing/Modals%20.pdf
https://www.uv.mx/personal/damorales/files/2013/01/modals-ilovepdf-compressed.pdf
http://alokrj.weebly.com/uploads/6/0/5/7/60576155/modal_verbs..pdf
http://wps.pearsoned.com/wps/media/objects/6524/6681325/Modals.pdf
Conditionals;
https://www.press.umich.edu/pdf/9780472032440-unit4.pdf
http://autoenglish.org/gr.conmixed.pdf
https://www.perfect-english-grammar.com/support-files/first-second-third-conditional-exercise.pdf
https://evajorgeteacher.files.wordpress.com/2016/04/conditional-sentences_all_types.pdf
https://inglescarmelitaslb.files.wordpress.com/2011/05/conditional-sentences.pdf
http://www.mssch.cz/sites/default/files/_uzivatele/juskova/conditionals.pdf
Determiners pdf
http://cbse.nic.in/publications/interact_in_english_wb_ix/UNIT-2.PDF
http://www.englishanchor.com/FileUpload/op61747/File/grammar_help.pdf
https://www.newcastle.edu.au/__data/assets/pdf_file/0018/74250/6-Determiners-II.pdf
http://www.allsaints-jun.derbyshire.sch.uk/attachments/download.asp?file=1178&type=pdf
Nouns;
http://teachersites.schoolworld.com/webpages/MMcCormick/files/grammar%20chapter%202%20nouns.pdf
http://www.chompchomp.com/terms/noun.pdf
http://lib.oup.com.au/he/Education/samples/zeegers_grammarmatters_sample.pdf
Pronouns;
https://www.newcastle.edu.au/__data/assets/pdf_file/0020/74252/8-Pronouns.pdf
https://www.press.umich.edu/pdf/9780472032419-unit2.pdf
http://www.chompchomp.com/handouts/proagreerules.pdf
http://downloads.bbc.co.uk/skillswise/english/en27pron/quiz/en27pron-e3-quiz.pdf
Relative Clauses;
http://muratdere.com.tr/private/english/grammar/11_RELATIVE_CLAUSES.pdf
https://inglescarmelitaslb.files.wordpress.com/2011/05/relative-clauses.pdf
Active and Passive Voice;
http://horarioscentros.uned.es/archivos_publicos/qdocente_planes/731840/thepassivevoice.pdf
https://www.englisch-hilfen.de/en/download/test_passive1_en.pdf
http://www.perfect-english-grammar.com/support-files/passive-explanation.pdf
Reported Speech;
https://inglescarmelitaslb.files.wordpress.com/2011/05/reported-speech.pdf
https://www.perfect-english-grammar.com/support-files/reported_speech_explanation.pdf
https://www.perfect-english-grammar.com/support-files/reported_statements.pdf
http://www.conhecer.org.br/download/INGLES%20INTERMEDIARIO/Module%202-%20reported-speech4.pdf
http://www.lib.teicrete.gr/webnotes/sdo/english%20grammar%20course/exercises/indirect%20speech.pdf
PUNCTUATION;
http://www.apu.edu/live_data/files/288/basic_punctuation_rules.pdf
http://www2.hull.ac.uk/lli/PDF/Punctuation.pdf
https://www.kent.ac.uk/learning/resources/studyguides/grammarspellingandpunctuation.pdf
10 Sentences of Modals Should, Examples of Should Sentences
45 Sentences of Should, Example Sentences with Modal Should
Modal Verbs Should Sentences, Examples of Should Sentences
10 Sentences of Verbs, Verbs Examples Sentences
Verb Sentences Examples, 90 Verb Example Sentences
95 Negative Sentences Examples, 95 Negative Sentences Examples