this is the second time she / improvement on that equipment;

问题描述:

this is the second time she / improvement on that equipment; a:has made;
1个回答 分类:英语 2014-09-24

问题解答:

我来补答
答案为has made
这是固定句型:this/it is the first/second/third...time+that-从句,意思是:第几次干某事.
在从句中要求用现在完成时.
 
 
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