A. exit
B. survive
C. save
D. die
A. ought to / mustn’t
B. needn't / will
C. will / must
D. should / might
A. must
B. should
C. can
D. needn’t
A. must have left
B. should have left
C. must be leaving
D. needn’t leave
A. should / must
B. should not / might
C. needn’t / may
D. mustn’t / can’t
A. might / needn't
B. can / should
C. shouldn't / may
D. must / can
A. should / can't
B. have to /must
C. can / needn't
D. might / mustn't
A. cannot
B. must not
C. may not
D. might not
A. needn't
B. must
C. has to
D. should
A. might / can
B. may / mustn't
C. can / should
D. must / needn't
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