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一道选择there is a new problem involved in the popularity of pri
题目内容：
一道选择
there is a new problem involved in the popularity of private cars ____road conditions need ___.
A.that;to be improved
B.which;to be improved
C.where;improving
D.when;improving
第二个空为什么填to be improved?need之后不是用动名词表示被动含义吗?
一道选择
there is a new problem involved in the popularity of private cars ____road conditions need ___.
A.that;to be improved
B.which;to be improved
C.where;improving
D.when;improving
第二个空为什么填to be improved?need之后不是用动名词表示被动含义吗?
there is a new problem involved in the popularity of private cars ____road conditions need ___.
A.that;to be improved
B.which;to be improved
C.where;improving
D.when;improving
第二个空为什么填to be improved?need之后不是用动名词表示被动含义吗?
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