________usedtobethoughtthatthe

发布时间:2020-07-27 17:52:55

________ used to be thought that the heavier objects fall to the ground faster than the light ones.A.HeB.WhatC.ItD.That

网友回答

C解析it是形式主语,代替后面的that引导的主语从句。
以上问题属网友观点,不代表本站立场,仅供参考!