When about one of the biggest concerns today, many people mention the sharp rise

When _______about one of the biggest concerns today, many people mention the sharp rise in prices.

A. asking   B. to ask    C. having asked    D. asked

试题答案

D

解析:

    本题考查状语从句的省略。句意：当被询问时，很多人提到物价上涨是最为关注的热点之一。在含有时间、条件、让步等状语从句的主从复合句中，当从句的主语和主句的主语一致，并且从句的谓语含有be时，则从句的主语和be都可以省略。