★ Modals of Deduction
It ____ been food poisoning. Nobody else who ate the fish got sick.
A. must have
B. can´t have
C. might have
Preview next quiz:
A: ‘I’m worried about Grandma. I tried to call her but she’s not answering her phone.’
B: ‘She _____________ be out. Or she might be asleep – she sometimes has a nap in the afternoon.’
A. must
B. may
C. can
D. can”t
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