问题补充:
There is a new problem involved in the popularity of private carsroad conditions need.
A. that;to be improved
B. which;to be improved
C. where;improving
D. when;improving
答案:
(答案→)A. that;to be improved
B. which;to be improved
C. where;improving
D. when;improving
解析:考查同位语从句和固定词组。Need doing=need to be done需要做某事;同位语从句conditions need.解释名词a new problem