用pertinacious造句子，“pertinacious”造句

The quality or state of being pertinacious.

I can affirm that he is tenacious and pertinacious as are few.

He had been driven into a corner by the pertinacious ingenuity of Miss French.

His style of argument in meetings is not so much aggressive as pertinacious.

Questions buzzed in his head like pertinacious bees.