问题 更新时间2023/4/3 12:59:00 7. His explanation was too difficult to understand and the children all became _____.A. confused B. confuse C. confusing D. to confuse 答案 登录 注册 A 出自:青书学堂 >> 河北建筑工程学院-建筑工程技术(专科)-大学英语1