---- We’re leaving for Hainan the day after tomorrow.  ---- Wow, have a good trip. And by the way how long ______ there?
#100175
A
have you stayed
B
are you staying
C
had you stayed
D
did you stayed
推荐题目
When the old man ______ to walk back to his house, the sun       itself behind the mountain. 
#101758
A
started; had already hidden
B
had started ;had already hidden
C
had started; was hiding
D
was starting; hid
 If their marketing plans succeed,they ________ their sales by 20 percent.
#99749
A
will increase
B
have been increasing
C
have increased
D
would be increasing