下列语句中,句式与其他三项不同的一项是(　　)①何以渐顿　②何以利吾国　③是故君子戒慎乎其所不睹　④此世俗之所谓知也　⑤见屈武侯　⑥知之为知之,不知为不知,是知也　⑦敏于事而慎于言　⑧德者,本也;财者,末也　⑨或书填坑窖,无闻后代　⑩其我之谓矣

________，Carolina couldn’t get the door open.

Is this the first time you______ Chengdu—–No. But the first time I______ here, thecity wasn’t so beautiful

Is___mother an English teacher.—Yes,she is.

We really enjoyed the school trip yesterday,________________ it rained in the afternoon and some of us got wet.