Glad to see you back. How long _____ in
题型:选择题
问题:
Glad to see you back. How long _____ in Russia? [ ]
A. did you stay
B. have you stayed
C. were you staying
D. have you been staying
Glad to see you back. How long _____ in Russia? [ ]
A. did you stay
B. have you stayed
C. were you staying
D. have you been staying