su yang _ do her homework on sundays.A don't B doesn't C isn't Daren't

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su yang _ do her homework on sundays.A don't B doesn't C isn't Daren't
su yang _ do her homework on sundays.A don't B doesn't C isn't Daren't

su yang _ do her homework on sundays.A don't B doesn't C isn't Daren't
选B,主语是第三人称单数,所以用doesn't 在否定

B
on sundays 因为sundays用了复数可以理解为是每个周天做作业。这是一种习惯性的行为,所以用一般现在时,排除CD
而主语Su Yang是第三人称单数 要用does的否定形式 排除A
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