Jean pays little attention to her appearance,otherwise she _____ a very attractive girl.A.ought to beB.must beC.could beD.should be请问为什么是C?其他答案为什么不行?

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Jean pays little attention to her appearance,otherwise she _____ a very attractive girl.A.ought to beB.must beC.could beD.should be请问为什么是C?其他答案为什么不行?

Jean pays little attention to her appearance,otherwise she _____ a very attractive girl.A.ought to beB.must beC.could beD.should be请问为什么是C?其他答案为什么不行?
Jean pays little attention to her appearance,otherwise she _____ a very attractive girl.
A.ought to be
B.must be
C.could be
D.should be
请问为什么是C?其他答案为什么不行?

Jean pays little attention to her appearance,otherwise she _____ a very attractive girl.A.ought to beB.must beC.could beD.should be请问为什么是C?其他答案为什么不行?
could be可能是=would be
前面为陈述语气,后句为虚拟语气.
前句如果改为虚拟语气,就应是:
If Jean paid attention to her appearance, she could be a very attractive girl.
其它的意思不对.
ought to应该=should
must be更不对了,肯定是……

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