they have math (at9:15) 就括号部分提问

问题描述:

they have math (at9:15) 就括号部分提问

When do they have math?( ) ()do they have math?前面有两空。劳解。What time When =What time 如果帮到你,请记得采纳,O(∩_∩)O谢谢