摘要：2．(2010年江苏常州教学质量调研)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 解析:选A.第一空处为that引导的同位语从句,need后面要接to be done或doing表示被动.因此A项正确.

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