Topics: Modals of Probability
I can hear a voice speaking, but there’s nobody here. It ………………….. be that parrot!
A. must
B. can’t
Select your answer:
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Simple vs Continuous Past Tense › ViewI ______ down the street when the accident happened
A. walk
B. was walking
C. walked
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Modal Verbs of Permission › View
_______ you pick up a program brochure for me?
A. can
B. could
C. may
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