Practice makes perfect: basic English

Introduction
 1. To Be: Present Tense
 2. To Be: Present Tense, Negative Form
 3. To Be: Present Tense, Question Form
 4. To Be: Past Tense
 5. To Be: Past Tense, Negative Form
 6. To Be: Past Tense, Question Form
 7. Exceptional Uses with the Verb To Be
 8. Adjectives
 9. To Have: Present Tense
 10. To Have: Present Tense, Negative Form
 11. To Have: Present Tense, Question Form
 12. The Simple Present Tense
 13: The Simple Present Tense, Negative Form
 14. The Simple Present Tense, Question Form
 15. Possessive Pronouns
 16. The Simple Past Tense
 17. The Simple Past Tense with Irregular Verbs, 1
 18. The Simple Past Tense with Irregular Verbs, 2
 19. The Simple Past Tense with Irregular Verbs, 3
 20. The Simple Past Tense, Negative Form
 21. The Simple Past Tense, Question Form
 22. Prepositions In and On
 23. There Is and There Are: Present Tense
 24. There Is and There Are: Present Tense, Negative Form
 25. There Is and There Are: Present Tense, Question Form
 26. There Is and There Are: Past Tense
 27. There Is and There Are: Past Tense, Negative Form
 28. There Is and There Are: Past Tense, Question Form
 29. Prepositions To and At
 30. The Present Progressive Tense
 31. The Present Progressive Tense, Negative Form
 32. The Present Progressive Tense, Question Form
 33. The Past Progressive Tense
 34. The Past Progressive Tense, Negative Form
 35. The Past Progressive Tense, Question Form
 36. Prepositions From and Of
 37. Will: Future Tense
 38. Will: Future Tense, Negative Form
 39. Will: Future Tense, Question Form
 40. Be Going To: Future Tense
 41. Be Going To: Future Tense, Negative Form
 42. Be Going To: Future Tense, Question Form
 43. The Indefinite Articles A and An
 44. Irregular Verbs Table
 45. The Present Perfect Tense
 46. The Present Perfect Tense, Negative Form
 47. The Present Perfect Tense, Question Form
 48. The Past Perfect Tense
 49. The Past Perfect Tense, Negative Form
 50. The Past Perfect Tense, Question Form
 Answer Key