[ Modal Verbs ]
All employees __________ complete the mandatory training by the end of the month.
A. should
B. can
C. must
D. may
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Grammar › ViewMy father _____ a child here in the 1960s.
A. have been
B. was
C. has been
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_________ she was very busy, my mother cooked a great meal for us.
A. because
B. because of
C. due to
D. although
E. despite