This()be a woman'coat.It() be a man'sA needn't ; canB can't ; mustC may not ; shouldD musn;t ;can't

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This()be a woman'coat.It() be a man'sA needn't ; canB can't ; mustC may not ; shouldD musn;t ;can't

This()be a woman'coat.It() be a man'sA needn't ; canB can't ; mustC may not ; shouldD musn;t ;can't
This()be a woman'coat.It() be a man's
A needn't ; can
B can't ; must
C may not ; should
D musn;t ;can't

This()be a woman'coat.It() be a man'sA needn't ; canB can't ; mustC may not ; shouldD musn;t ;can't
表示肯定推测用must(把握性极大,100% 表示一定) 和 may(might)/could(把握性小,20%--80%左右,表示 可能)
表示否定推测用can.t(几率为0%,表示不可能).
而mustn't表示禁止,不准.needn't表示不必,should表示应该,这3个都不表示推测.
所以选 B

B