—How long have you been in this office?
题型:选择题
问题:
—How long have you been in this office?
—Just a few minutes. My cousins__________ here together with me.
A.have walked
B.had walked
C.walked
D.have been walking
—How long have you been in this office?
—Just a few minutes. My cousins__________ here together with me.
A.have walked
B.had walked
C.walked
D.have been walking