题目

____in history when remarkable progress in relatively short periods of time.
A.There has time B.it is time C.There has been time 我觉得选B啊.求解释 2.“were all the people in the bus injured?""NO,_____only five passengers who got hurt."我觉得应该填there were.为什么答案是it was? 3.___was no doubt that his health was returning.我觉得应该填it..如果把it was...that 去掉.句子也通啊 可是答案偏偏是there?. 4.where there is shale____likely to be oil.我填it is ..there is .我无语的不理解啊

提问时间：2020-12-15

答案

1.relatively short periods of time：相当短的一段时间,但是再短它也是一段时间,所以前半句也要选能表示一段时间的——A.有时间,讲不通,淘汰B.It is time sb did /It is time for doing,到了该做某事的点了,注意是...