A-A+ It would be completely irresponsible and uneth 2022-08-06 10:24:47 问答库 阅读 178 次 问题详情 It would be completely irresponsible and unethical to use drugs on people that______(not test)thoroughly on animals. 参考答案 正确答案：had not been tested解析] 过去完成时的被动语态had not been+过去分词。
