作业帮you must wait for the green light .改为否定句
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 00:37:05
you must wait for the green light .改为否定句
you must wait for the green light .改为否定句
you must wait for the green light .改为否定句
把must 改为needn't
you needn't wait for the green light .