4. 今天,这个传统正在改变。随着住房条件的改善,越来越多年轻夫妇选择与父母分开住。
A. Today, this tradition is changing. As housing conditions improve, more and more young couples choose to live separately from their parents,
B. Nowadays, this tradition has been changed. Because housing conditions have been improved, more and more young couples live separately from their parents,
C. Today, for housing condition is being improved, more and more young couples move out from their parents’ home --- the tradition is being changed.
D. Nowadays, the tradition no longer remains the same --- Housing conditions improved, more and more young couples move out from their parents’ home, living separately.