Most environmental problems exist because adequate measures

学习 时间:2026-03-30 17:21:39 阅读:759
Most environmental problems exist because adequate measures for preventing them___taken in the past.A.was not B.were not C.were not being D.being not 请说明原因,

最佳回答

勤劳的悟空

潇洒的百合

2026-03-30 17:21:39

B。were notMost environmental problems(主语) exist(谓语) because(引导原因状语从句) adequate measures(从句的主语) for preventing them (主语的定语)were not taken(被动语态做谓语) in the past

最新回答共有2条回答

  • 勤劳的台灯
    回复
    2026-03-30 17:21:39

    B。were notMost environmental problems(主语) exist(谓语) because(引导原因状语从句) adequate measures(从句的主语) for preventing them (主语的定语)were not taken(被动语态做谓语) in the past

上一篇 仿句;春雨,像春姑娘纺出的线,轻轻地落到了地上.——,像——.——,像——.

下一篇 简述超导现象及高温超导技术的应用和意义