question: it is in this way martinus has created his life’s work, thereby making a new and comprehensive world picture available to mankind.
Capitalize this past sentence correctly.
A: It is in this way Martinus has created his life’s work, thereby making a new and comprehensive world picture available to mankind.

question: most young people speak english, whilst older people speak better german.
Capitalize this past sentence correctly.
A: Most young people speak English, whilst older people speak better German.

question: the day began with a conference with input from internal as well as external presenters.
Capitalize this past sentence correctly.
A: The day began with a conference with input from internal as well as external presenters.