Should this have a semi-colon, a comma, or a period?

3. cindy is the prettiest girl she will win the pageant.

Sarah tried to erase the files full of illegal in her computer before the police arrived, but she was too late.

Read the passage. when i consider how my light is spent ere half my days, in this dark world and wide, and that one talent which is death to hide, lodged with me useless, though my soul more bent to serve therewith my maker, and present my true account, lest he returning chide; “doth god exact day labor, light denied? ” in line 7 of sonnet xix by john milton, the speaker asks, “doth god exact day labor, light denied? ” what does his question mean? why must god make us suffer to work? what shall one charge god to work in the dark? how does god expect him to work when he is blind? is god trying me?

Read this excerpt from through the looking-glass by lewis carroll. "you might make a joke on that,” said the little voice close to her ear: "something about ‘you would if you could,’ you know.” "don't tease so,” said alice, looking about in vain to see where the voice came from; "if you're so anxious to have a joke made, why don't you make one yourself? ” the little voice sighed deeply: it was very unhappy, evidently, and alice would have said something pitying to comfort it, "if it would only sigh like other people! ” she thought. but this was such a wonderfully small sigh, that she wouldn't have heard it at all, if it hadn't come quite close to her ear. the consequence of this was that it tickled her ear very much, and quite took off her thoughts from the unhappiness of the poor little creature. what question should a reader ask to clarify what is happening in the story? who or what is the voice speaking to alice? when will alice attempt to share a joke? what secret will alice share with the new character? why do whispers tickle the listener?