Mary sings English songs well and .A. Jane does tooB. either does JoesC. so Janes doesD.

问题补充：

Mary sings English songs well and .

A. Jane does too

B. either does Joes

C. so Janes does

D. so does Jane

答案：

A. Jane does too

B. either does Joes

C. so Janes does

(答案→)D. so does Jane

解析：句意：玛丽唱英文歌唱的很好而且乔斯也唱得很好。“So+助动词/情态动词/be动词+主语”则表示“前面的肯定情况也适用于后者”；而“So+主语+助动词/情态动词/be动词”则表示对前面叙述的肯定；故选D。