A-A+ New and more up-to-date methods have to______( 2022-08-06 10:26:57 问答库 阅读 178 次 问题详情 New and more up-to-date methods have to______(find)for collecting earthquake data and analyzing it. 参考答案 正确答案：be found[解析] 主语是methods，动作的承受者，故用被动语态。
