it takes the students 20 minutes to clean their classroom(对划线部分提问

问题描述:

it takes the students 20 minutes to clean their classroom(对划线部分提问

对 20 minutes 提问:
How long does it take the students to clean their classroom
翻译:学生们打扫教室花了多长时间?
不明白的再问哟,请及时采纳,多谢!