A-A+ The clever method (was) (paid attention) by ve 2022-08-01 21:12:09 问答库 阅读 167 次 问题详情 The clever method (was) (paid attention) by very few technicians (until) (the) early 1970s.A．wasB．paid attentionC．untilD．the 参考答案 正确答案：B解析：正确的表达应该是pay attention to。
