There is a new problem the popularity of private cars that road conditions need
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There is a new problem ________ the popularity of private cars that road conditions need ________．
[]A．involved in; to be improved
B．involving in; to be improved
C．involving in; improving
D．involved in; improved
试题答案
答案：A
解析：考查非谓语动词．involved in是过去分词短语作定语，意为“包含，牵涉”；need之后接动名词的主动式或动词不定式的被动式． |