2. 职称英语
  3. In the past few years there (be) ______ a great increase in the amount of resear

In the past few years there (be) ______ a great increase in the amount of resear

游客2023-09-27  28
问题 In the past few years there (be) ______ a great increase in the amount of research on the brain.
选项
答案 has been
解析 in the past/last few years/weeks/days作状语，句子用现在完成时。
转载请注明原文地址:https://tihaiku.com/zcyy/3051085.html
相关试题推荐
随机试题
最新回复(0)