2. 外语
  3. A(Ever since) the world B(began) nations C(have difficulty) in D(keeping) peace with their neighbors.

A(Ever since) the world B(began) nations C(have difficulty) in D(keeping) peace with their neighbors.

admin2013-01-03  52
问题 A(Ever since) the world B(began) nations C(have difficulty) in D(keeping) peace with their neighbors.
选项
答案C
解析 应改为have had difficulty。因为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://kaotiyun.com/show/aRDO777K
0

成人本科学位英语

相关试题推荐
随机试题
最新回复(0)