---When did you return to China?---.A. Until next weekB. Not until next weekC. a few days

问题补充：

---When did you return to China?

---.

A. Until next week

B. Not until next week

C. a few days ago

D. for a few weeks

答案：

A. Until next week

(答案→)B. Not until next week

C. a few days ago

D. for a few weeks

解析：

试题分析: 句意：你什么时候回到的中国？我一直到下周才回去. 答句为省略句，全句为I don’t return until next week.Not until直到……才，动词为瞬间动词，用于否定句；untill直到，动词为延续性动词，用于肯定句；return回，瞬间动词，故选B。