-I hear David has won the first prize in the English petition, Mr．Green．-________, and ________．A.So he has; so his sister hasB.So he has; so has his sisterC.So has he; so has his sisterD.So has he; so his sister has
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B解析“so+主语+助动词”表示对前面所说的情况加以肯定，“so+助动词+主语”表示前面所说的情况也适用于说明另一个人或一种情况。该句句意为：“他的确获得了一等奖，他妹妹也获得了一等奖。”