Joan has already bought some potoes,so you ______ to buy them.A.needn't B.needn't to C.doesn't need D.don't need该选什么?还要有原因,就是为什么选这个

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Joanhasalreadyboughtsomepotoes,soyou______tobuythem.A.needn''tB.needn''ttoC.doesn''tneedD.don''tneed该选什么

Joan has already bought some potoes,so you ______ to buy them.A.needn't B.needn't to C.doesn't need D.don't need该选什么?还要有原因,就是为什么选这个
Joan has already bought some potoes,so you ______ to buy them.
A.needn't B.needn't to C.doesn't need D.don't need
该选什么?还要有原因,就是为什么选这个

Joan has already bought some potoes,so you ______ to buy them.A.needn't B.needn't to C.doesn't need D.don't need该选什么?还要有原因,就是为什么选这个
选D.
need有做行为动词,以及情态动词.
在这里做行为动词,前面需要助动词do,所以A,B都排除.
而空格前面的主语是You,所以对应的是don't.而doesn't是第三人称单数的,C也排除

A, 考察need的用法，此处理解为你不需要买，用need to do sth 这个结构

D，因为need当情态动词用否定形式是needn't，后不加to，当实义动词时否定是don't need，后加不定式

Joan Joan Joan has already bought some potoes,so you ______ to buy them.A.needn't B.needn't to C.doesn't need D.don't need该选什么?还要有原因,就是为什么选这个 He has died already China has already carried Username has already been taken but she has already gone He already has a lover rarely——to do what her parents have askedA did Joan fail B has Joan failed C Joan failed D had Joan fail选B为什么用现在完成时,不用过去式或过去完成式 Mary has gone to the teacher's office,so has Joan Screen name has already been taken This username has already been used是什么意思 That survey has already been taken. A snow w_ has been posted already He has already worked for() hour. He has finished___(do)his work already. My morther has gone home already i love the people has already