—He’s already back to Australia ?— . He is on a visit to Shanghai.A. isn’t he; NoB. hasn

问题补充：

—He’s already back to Australia, ?

— . He is on a visit to Shanghai.

A. isn’t he; No

B. hasn’t he; Yes

C. isn’t he; Yes

D. hasn’t he; No

答案：

(答案→)A. isn’t he; No

B. hasn’t he; Yes

C. isn’t he; Yes

D. hasn’t he; No

解析：考查反意疑问句及其回答。be back=come back“返回，回来”，故句中的He’s是he is的缩写；反意疑问句用isn’t；排除B、D。根据答语“他去上海旅游了”可知，回答是否定的。故选A。