Text: i exhorted titus, and i sent the brother with him. did titus take any advantage of you? didn't we walk in the same spirit? didn't we walk in the same steps?

Correct capitalization: I exhorted Titus, and I sent the brother with him. Did Titus take any advantage of you? Didn't we walk in the same spirit? Didn't we walk in the same steps?

Text: the chance of winning a series of limited prizes is equal for each machine.

Correct capitalization: The chance of winning a series of limited prizes is equal for each machine.

Text: on the other hand, some couples are embracing social media fully. the more photos the better!

Correct capitalization: On the other hand, some couples are embracing social media fully. The more photos the better!

Text: that means it is not necessary to install an additional light switch.

Correct capitalization:
That means it is not necessary to install an additional light switch.