If a computer crashes,you will lose the file you on unless you save it regularly.A. are

发布时间:2020-08-15 01:14:18

If a puter crashes,you will lose the file you      on unless you save it regularly.   
A. are working
B. work
C. will work
D. worked

网友回答

A. are working
B. work
C. will work
D. worked
解析:  考查时态。依据常识可以知道,电脑瘫痪,之前的文件不会丢失,而即将进行的文件也不可能丢失,所以可以排除C、D两项;再依据后文的save it regularly可知,这些文件应该是正在进行的文件,所以用进行时态。
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