I had been looking for the book for two days________I found it at last.A.until B.when C.before这3个词好难选呀,好像都行!

分类: 作业答案 • 2023-01-24 15:32:23

问题描述：

I had been looking for the book for two days________I found it at last.A.until B.when C.before
这3个词好难选呀,好像都行!

答

这个是现在完成时第二种意义的应用
为现在完成进行时
这道题选A
B中“WHEN”一般用来提问确切时间,不能做现在完成进行时的连词
C中“before”意为“曾经”一般放句末