618 School integration plans that involve busing between suburban and central-city areas have contributed, according to a recent study, to significant increases in housing integration, which, in turn, reduces any future need for busing. (A) significant increases in housing integration, which, in turn, reduces (B) significant integration increases in housing, which, in turn, reduces (C) increase housing integration significantly, which, in turn, reduces (D) increase housing integration significantly, in turn reducing(A) (E) significantly increase housing integration, which, in turn, reduce A 中的which 我认为和和GWD 30类似, 同样的是指代前面的整个事情. |