问题

countryside,_______ car is not yet _______ popular means of transportation
A:I had seen you for a long time
B:I have seen you for a long time
C:I haven’t seen you for a long time
D:I saw you again before long
B:I have seen you for a long time
C:I haven’t seen you for a long time
D:I saw you again before long
正确答案是: