Ques: He never missed an opportunity to attend the Bayreuth Festival and would always seek to incorporate at least one opera in each of his many lecturing engagements around the world
Fix the punctuation.
Ans: He never missed an opportunity to attend the Bayreuth Festival, and would always seek to incorporate at least one opera in each of his many lecturing engagements around the world.
Ques: Choose the drive from which you want to recover pictures
Fix the punctuation.
Ans: Choose the drive, from which you want to recover pictures
Ques: At this stage he did not know of the published work on noneuclidean geometry but he clearly was working his way towards the idea
Fix the punctuation.

Ans: At this stage he did not know of the published work on non-euclidean geometry but he clearly was working his way towards the idea.