A. must
B. mustn’t
C. can
D. don’t have to
A. can
B. mustn't
C. have to
D. don't have to
A. can
B. must
C. mustn't
D. don’t have to
A. must
B. mustn't
C. has to
D. don't have to
A. can't
B. must
C. can
D. don’t have to
A. can
B. must
C. mustn't
D. don't have to
A. must
B. mustn't
C. can
D. don't have to
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