A. must/ have to
B. may/must
C. should/needn't
D. mustn't/ shouldn't
A. needn't
B. mustn't
C. do not have to
D. may not
A. must
B. mustn't
C. need
D. needn't
A. should have been damaged
B. needn't be damaged
C. must have been damaged
D. ought not be damaged
A. May / can
B. Must / might
C. Will / should
D. Might / needn’t
A. must have tried
B. should have tried
C. can have tried
D. may have tried
A. shouldn't
B. mustn't
C. needn't
D. oughtn't to
A. must be
B. must being
C. must have been
D. should have been
A. should not
B. might not
C. must not
D. will not
A. mustn't
B. needn't
C. mightn't
D. may not
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