2. 职称考试
  3. The defense works_________long ago to keep the enemy away.A．were built B．has bee

The defense works_________long ago to keep the enemy away.A．were built B．has bee

admin2020-12-24  9
问题 The defense works_________long ago to keep the enemy away.
选项 A．were built
B．has been built
C．had been built
D．was built
答案D
解析考查动词时态和主谓一致。主语The defense works(防御工程)是集合名词，当成整体考虑，谓语动词要用第三人称单数形式。long ago表示过去的时间，所以用一般过去时态的被动语态。故选D。
转载请注明原文地址:https://ti.zuoweng.com/ti/VoT8KKKQ
相关试题推荐
    随机试题