[ Modal Verb ]
“Have you seen John?” “No. But he _________ be studying in the library.
A. may
B. will
C. must
D. need
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Grammar › ViewThe soldiers ______ brave.
A. am
B. is
C. are
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He stayed home, _______ he was feeling sick.
A. and
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Conjunctions › View
We cannot travel to other countries _____ they have lifted the travel ban.
A. because
B. until
C. neither
D. since