[ Grammar (was, were, could, could not) ]
Mary’s grandfather________play chess and he was the best!
A. could
B. couldn’t

Random Topics:
Grammar - could / could not-Ing and Infinitive Verb PatternsComparatives or SuperlativesPast Perfect TenseGerunds as Objects of PrepositionsDefinite pronouns (Subject, Object, Reflexive)Transition WordsQuantifiers / Prepositions of Time and Comparative AdjectivesPassive Voice - Present Simple and Past SimpleVocabulary & Phrasal VerbOther quiz:
Articles and Demonstratives › ViewChoose the correct article: ___ house
A. some
B. the
C. a
D. an
Grammar › View
Dinner is _______ (serve) after 7 p.m.
A. serving
B. being served
C. to be served
D. served
Articles › ViewCan you play ______ guitar?
A. a
B. an
C. the
D. none
Past Tense › View
I could not hear him because he ________________ very softly.
A. spoke
B. speaks
C. speak
D. speaking
