[ Grammar ]
You must do your homework; ______, you might get a bad grade.
A. nor
B. otherwise
C. unless
D. however

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Perfect Modals › ViewHe _______ left his keys at home.
A. Might have
B. Must have
C. Should have
D. Can’t have
Poetry Vocabulary › View
A poetic form with nineteen lines and a set pattern of repeating lines and rhyming words is called a _________.
A. arbor
B. parallel structure
C. villanelle
D. entrechats
Grammar Clauses › ViewThough, although, even though
A. to show the contrast
B. to show the comparison
C. to show conditions
D. to show reasons
Grammar › View
Yuta: ‘I’ll send you a postcard.’
He told us that he ______ us a postcard.
A. wasn’t been
B. wasn’t
C. hadn’t been
D. didn’t be
