Explanation-1

The worker will have his or her work to do, just as much as I have had themselves.

A) No change

B) mine

C) ourselves

D) ours

Explanation-2

Of course, the PlayStation wasn’t your; you’ve taken it from somebody else.

A) No change

B) your’s

C) yourself

D) yours

Explanation-3

However, this was for our sake to win the game in a challenge, not in any sense for they.

A) No change

B) there’s

C) theirs

D) theirs'

Explanation-4

Several teachers took advantage of our to build their academic careers.

A) No change

B) us

C) we

D) our’s

Explanation-5

The principals' objections to the holiday were moral in nature. He did not want to grant the holiday, even though it fell on a weekend.

A) No change

B) principals

C) principal’s

D) principal