Students must charge their tablets before class., "We are allowed to charge our tablets during class.", "We have to charge our tablets before class.", "We don't have to charge our tablets before class.", "We shouldn't have to charge our tablets before class.", "We can't post mean things on social media.", Students must past mean things on social media., Students shouldn't be allowed to post mean things on social media., Students don't have to post mean things on social media., Students mustn't post mean things on social media., Students must not play online games in class., "We can't play online games in class.", "We should be allowed to play online games in class.", "We shouldn't have to play online games in class.", "We don't have to play online games in class.", Students must not play online games in class., "We can't play online games in class.", "We should be allowed to play online games in class.", "We shouldn't have to play online games in class.", "We don't have to play online games in class.", Students must not play online games in class., "We can't play online games in class.", "We should be allowed to play online games in class.", "We shouldn't have to play online games in class.", "We don't have to play online games in class.".

Task b

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