首页 > 中学英语试题 > 题目详情
Researchers _______ to study mice from early ages but came across technical difficulties, so they we...
题目内容：
Researchers _______ to study mice from early ages but came across technical difficulties, so they weren’t sure they could expect clear results.
A. intended B. were intended
C. had intended D. had been intended
本题链接：