来自皇甫杰的问题
BytheendofthisyearMr.Smith________inourcompanyforexactlythreeyears.为什么中间是填willhaveworked还可以填hasworked
BytheendofthisyearMr.Smith________inourcompanyforexactlythreeyears.
为什么中间是填willhaveworked
还可以填hasworked

