问题补充:
---How long in Shanghai?
--- For two weeks. I’m going to visit some schools in Shanghai.
A. did you stay
B. are you staying
C. do you stay
D. have you stayed
答案:
A. did you stay
(答案→)B. are you staying
C. do you stay
D. have you stayed
解析:可联系答.案.网客服索取。