Great job attempting to translate the sentences! Here are some tips to help you improve your translations:
1) "What did they bring?" can be translated as "¿Qué trajeron?" in Spanish. The word "lo" does not need to be included in this sentence.
2) "What did she say?" can be translated as "¿Qué dijo ella?" or "¿Qué te dijo?" if the question is directed towards the person you are talking to.
3) "Did you read the newspaper?" can be translated as "¿Leíste el periódico?" in Spanish. The word "tu" is not necessary in this sentence.
Regarding the accents, it is important to include them in Spanish as they can change the meaning or pronunciation of words. Here are the corrected sentences with proper accents:
1) ¿Qué trajeron?
2) ¿Qué dijo ella? or ¿Qué te dijo?
3) ¿Leíste el periódico?
Remember, translating language is not only about replacing words, but also about understanding the syntax and structure of the sentence in both languages. Keep practicing and you'll improve over time!