问题
选择题
---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
答案：B
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---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：B