问题
选择题
John ___ be a basketball player.He’s much too short.
A．may
B．mustn’t
C．can't
D．should
答案
答案：C
断然否定推测用can't而不能用mustn’t, mustn’t表示 “不准”
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John ___ be a basketball player.He’s much too short.
A．may
B．mustn’t
C．can't
D．should
答案：C
断然否定推测用can't而不能用mustn’t, mustn’t表示 “不准”