Don't you know it's the first time he_this kind of meeting?A attends B attended C has atteng D is attending

Don't you know it's the first time he_this kind of meeting?A attends B attended C has atteng D is attending
Don't you know it's the first time he_this kind of meeting?A attends B attended C has atteng D is attending

Don't you know it's the first time he_this kind of meeting?A attends B attended C has atteng D is attending
B attended
在it's the first time 这个句型中,主句是现在时时,后面从句要用一般过去时.
AD是现在时,肯定不行.C是完成时,但是attend是瞬间动词,一般不用完成时.
所以选B

C 有个句法就是it is XX time sb has done sth..

A

C
It is/was the first time……是与完成时在一块用的。