Troubleshooting Common Errors*

• a, an, some



• Adjectives Ending in -ed and -ing



• Do and Make: Their Use.



• How + Adjectives / Verb to be



• Must, have to



• Myself, Yourself, Each Other, Etc.



• Past Tense Forms



• Present Progressive Forms



• Present Simple Affirmative Forms



• Present Simple Negative Forms



• Present Simple Question Forms



• Present Simple versus Present Progressive



• Present Simple: Non-progressive Verbs



• Say / Tell



• Something, Anything, Nothing, Etc.



• There is / are



• To versus at

*In many quizzes these pages appear as pop-ups for easy consultation.

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