question: of course the witch-hunts against imaginary communists in the early 1950 was a disgraceful affair which cost many their jobs and led to long-term suffering.
Capitalize this past sentence correctly.
A: Of course the witch-hunts against imaginary communists in the early 1950 was a disgraceful affair which cost many their jobs and led to long-term suffering.

question: by adding more files, when your memory card is full will make you lose files on memory card
Capitalize this past sentence correctly.
A: By adding more files, when your memory card is full will make you lose files on memory card

question: guajardo's troops were positioned as if to give zapata a military salute.
Capitalize this past sentence correctly.
A: Guajardo's troops were positioned as if to give Zapata a military salute.