Don't you know it's the first time he ___this kind of meeting?A:attendedB:has attended选A.为什么?不是IT'S ...TIME 后用DID的么

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Don't you know it's the first time he ___this kind of meeting?A:attendedB:has attended选A.为什么?不是IT'S ...TIME 后用DID的么
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Don't you know it's the first time he ___this kind of meeting?A:attendedB:has attended选A.为什么?不是IT'S ...TIME 后用DID的么
Don't you know it's the first time he ___this kind of meeting?
A:attended
B:has attended
选A.为什么?不是IT'S ...TIME 后用DID的么

Don't you know it's the first time he ___this kind of meeting?A:attendedB:has attended选A.为什么?不是IT'S ...TIME 后用DID的么
我怎么觉得是B?我记得是it's time...that ..has
参考这里http://zhidao.baidu.com/question/16983600.html