It seems necessary that population growth______(每隔一段时期调查一次).(should)be surveyed

游客2023-07-10 28

问题 It seems necessary that population growth______(每隔一段时期调查一次).

选项

答案 (should)be surveyed at intervals

解析 ①在It seems necessary that结构中，从句谓语动词用虚拟语气。②另外，还考查了被动语态和短语at intervals。

转载请注明原文地址:https://tihaiku.com/zcyy/2825812.html

相关试题推荐

随机试题

最新回复(0)

ThepopulationofChinaisalmost__________(是…的五倍)thatoftheUnitedStates.five