[ Grammar ]
You _____ seen Helen. She was standing right next to you at the party!
A. shouldn’t have
B. can’t have
C. couldn’t have
D. must have

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Grammar - could / could notIELTS VocabularyTemporal Conjunctions and ConnectivesModals and VocabularySimple Present Tense vs Present Continuous TenseLinking VerbGrammar Past and Future TenseCan vs CouldSimple Past - Irregular VerbsModals and Modal PerfectsOther quiz:
Modal Verb › ViewI think I _____ go shopping. We’ve run out of food.
A. must
B. could
C. need
D. should have been
Grammar › View
People still argue about whether or not OJ Simpson committed a CRIME.
CRIME is a(n)
A. concrete noun
B. abstract noun
C. collective noun
D. plural noun
I bet ___ a responsible person.
A. your
B. you’re
Articles › View
My father bought … new car yesterday.
A. a
B. an
