seeing everything remained-----as it had been two hours before,the boss couldn't help shouting.A.to be done B.undone为什么选B不选A动词不定式不是表示未完成么

seeing everything remained-----as it had been two hours before,the boss couldn't help shouting.A.to be done B.undone为什么选B不选A动词不定式不是表示未完成么
seeing everything remained-----as it had been two hours before,the boss couldn't help shouting.
A.to be done B.undone
为什么选B不选A
动词不定式不是表示未完成么

seeing everything remained-----as it had been two hours before,the boss couldn't help shouting.A.to be done B.undone为什么选B不选A动词不定式不是表示未完成么
Remain是系动词,系动词后加形容词,undone此处为系动词

被动语态的动词也可以是形容词， undone是形容词指还没有完成。 又例如, the broken chair 那破了的椅子， broken是被动语态动作形容词。 所以选B咯。

动词不定时表示"将要做"的意图,不侧重"没完成"之意. remain 这里是连系动词,相当于be ,后接形容词比较合适.