Should X Ought To

Explanation
The word "ought" is the correct answer because it expresses a moral obligation or duty, which fits well in the context of studying. "Should" is also a possibility, but "ought" carries a stronger sense of moral responsibility and is more appropriate for emphasizing the importance of studying Newton's life.

Explanation
In this sentence, the word "should" is the correct answer because it expresses a recommendation or advice. It implies that it is appropriate or necessary for them to ask the teacher to leave the room. "Ought" could also be a possible answer, as it has a similar meaning to "should" in this context. However, "ought" is less commonly used in modern English compared to "should."

Explanation
The correct answer is "should" because it implies a moral obligation or a recommendation to give her a present on her birthday.

Explanation
In this question, the correct answer is "should". "Should" is used to express a recommendation or expectation. In this case, the speaker is suggesting that it would be a good idea to arrive at school early tomorrow because there is a special class. This implies that it is important or necessary to be on time for the special class. "Ought" is not the correct answer because it is used to express moral obligation or duty, rather than a recommendation or expectation.

Explanation
The word "ought" is the correct answer because it is used to express moral obligation or duty. In this context, the sentence suggests that the speaker feels a sense of duty or obligation to write to their friends in Italy. The word "should" could also be a possible answer, as it is often used to indicate an obligation or recommendation, but "ought" is a more appropriate choice in this case.

Explanation
The correct answer is "should" because it implies a recommendation or advice for the person to pass their examination. It suggests that passing the examination is the right or appropriate thing to do.

Explanation
The word "ought" is the correct answer because it is used to express moral obligation or duty. In this sentence, the subject is expected or obligated to visit their parents every month, indicating a sense of responsibility or expectation. "Ought" is commonly used to suggest what is the right or proper thing to do in a given situation.

Explanation
The correct answer is "ought". "Ought" is used to express moral obligation or duty, and in this sentence, it implies that she has a responsibility or duty to do her homework tomorrow.