(Ever since) the world (began), nations (have difficulty) (in keeping) peace wit

游客2025-03-17 39

问题 (Ever since) the world (began), nations (have difficulty) (in keeping) peace with their neighbors.

选项 A、Ever since
B、began
C、have difficulty
D、in keeping

答案 C

解析应改为have had difficulty。ever since引导句子的时候，从句用过去时，主句要用现在完成时。

转载请注明原文地址:https://www.tihaiku.com/zcyy/4001690.html

相关试题推荐

随机试题

最新回复(0)

(Eversince)theworld(began),nations(havedifficulty)(inkeeping)peacewit