-- Mary and Tony want to go to the party?--No they dont.A. DoB. DoesC. IsD. Are

问题补充：

-- Mary and Tony want to go to the party?

--No, they don .

A. Do

B. Does

C. Is

D. Are

答案：

(答案→)A. Do

B. Does

C. Is

D. Are

解析：句子主语为Mary and Tony，是复数形式。相当于they，后面又有实义动词want，故一般疑问句要用助动词do。所以选A。