学生们通常在下午四点锻炼,(锻炼用exercise) The students usually --- --- --- 4 in the afternoon
问题描述:
学生们通常在下午四点锻炼,(锻炼用exercise) The students usually --- --- --- 4 in the afternoon
三个空
答
have exercise at为什么不是has?前面是students啊student+s表复数