[ Modal Verbs ]
She … what happened unless she was there.
A. couldn’t have known
B. couldn’t know
C. mightn’t have known
D. mightn’t know

Random Topics:
Present Perfect and Present Perfect Progressive TensesGrammar - must & have toModals, Phrasal Verbs, Gerunds and InfinitivesSimple Past Tense & Future TenseFirst & Second ConditionalConditionals and Modal VerbsComparative AdjectivePast SimpleFuture - Will and Be going toAdverb of MannerOther quiz:
Tenses › ViewFill in the blank with the correct tense: By the time she arrives, we _______ dinner.
A. will have
B. had
C. have
D. has
E. having
Homophones › View
Once I realized the newspaper was ____________, I put it back and didn’t try to take it again.
A. Theirs
B. There’s
C. They’re
Mt Everest is …………………highest mountain.
A. a
B. an
C. the
D. nothing
Comparatives and Past Perfect Tense › View
I was sure that I ___________ her before.
A. had saw
B. seen
C. had seen
