Did you know?How many time have you been late for school?(合并为一个宾语从句）怎么改有提示 Did you know how many times ____ ____ ____ late for school?
问题描述：
Did you know?How many time have you been late for school?(合并为一个宾语从句）怎么改
有提示 Did you know how many times ____ ____ ____ late for school?
答
you had been
从句要和主句时代一致.