问题补充:
If a computer crashes,you will lose the file you on if you don’t save it early enough.
A. are working
B. work
C. will work
D. worked
答案:
(答案→)A. are working
B. work
C. will work
D. worked
解析:考查时态:句意是:如果电脑死机,如果你不早点保存,就会丢掉正在处理的文件,说明是在死机的时候正在做的事,选A。