[ Modal Auxiliary ]
He ____ have taken your book by mistake.
A. can
B. should
C. have to
D. might
Select your answer:
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Infinitives › ViewWill your parents let you _________ in this project?
A. to participate
B. participate
C. participating
D. participated
Grammar & Vocab › View
I ______ study hard in order to pass this exam.
A. must
B. can
C. don’t need to