Question

--Alice has to finish her homework now,______? --Yes,she must hand it in as soon as possible

A has she. B hasn't she. C does she D. doesn't she
还有一题
--Who cooked supper?
--mother ____
A did. B was. c is D does

Answer 1

1 D 此为一般现在时的反义疑问，关键，在于前一个句子的谓语动词为 has 且为一般现在时 ，故反义疑问句应选用助动词does，前一句为肯定句，后一句为否定句，所以应选D. doesn't she
2 A cook为行为动词所助动词都以借助助动词do的形式，又应上一句为一般过去时，所以应选do的一般过去时形式did.