[ Modal Verbs for Speculation ]
They´re certanly not here now. They must ______________already
A. have left
B. have been leaving
Select your answer:
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Modal Verbs › ViewThey _____ bring their ID cards to the examination hall.
A. can
B. must
C. might
D. would
Future Tenses › View
By the end of the month I ______________here for 25 years.
A. will work
B. am going to work
C. will have worked