[ Perfect Modals ]
She doesn’t understand the question. She ____ been listening carefully.
A. should have
B. must have
C. can’t have
D. needn’t have
Select your answer:
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Modals › ViewCan you speak a little louder? I _____ hear you very well.
A. couldn’t
B. can’t
Subject-Verb Agreement › View
One of my best friends _____________ an extra on Seinfeld this week.
A. Are
B. Is