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25．Helen has two sisters and a brother．Her brother is working.but her sisters are still at school．A．neither B．either C．a(chǎn)ll D．both 【查看更多】

 

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Helen has two sisters and a brother．Her brother is working，but _______ her sisters are still at school．

A．neither         B．either         C．a(chǎn)ll         D．both

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