The human beings have polluted the environment seriously. It is time the United

游客2023-12-27 53

问题 The human beings have polluted the environment seriously. It is time the United Nations must take some measures.

选项 A、take
B、taking
C、to take
D、took

答案 D

解析结构应用本句考察的是虚拟语气结构。It is(about/high)time that…句型用虚拟语气，其谓语部分用一般过去时，因此D为答案。

转载请注明原文地址:https://www.tihaiku.com/zcyy/3310432.html

相关试题推荐

随机试题

最新回复(0)

HowoftendoessomeoneintheUnitedStatesdieofasuperbug?A、Every10minutes