______was thought to be impossible in the past has now become a reality.A、WhatB

游客2023-09-18 49

问题 ______was thought to be impossible in the past has now become a reality.

选项 A、What
B、Which
C、That
D、As

答案 A

解析题干中有两个谓语动词was thought和has become，因此本句应为主从复合句,且空格所填词引导的从句作句子的主语，所以空格处应填一个主语从句的引导词且能在从句中作主语，故选A。

转载请注明原文地址:https://tihaiku.com/zcyy/3025013.html

相关试题推荐

随机试题

最新回复(0)

[originaltext]W:Whendidyoubecomeinterestedincollectingstamps?M:Oh,wh