请教一道英语题目！谢谢

This not surprising,given that he has never sat down for one minute to do revision.
这没什么好惊讶的，毕竟他从没有花过一分钟来复习。
这句话前面应该还可以加一句话，如He has failed his exams.这样的话，后面的this就有具体所指。