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Correct Answer: D) Ought.
Correct Answer: C) She ought to study hard.
Correct Answer: C) Had better.
Correct Answer: C) Had better take.
Correct Answer: B) Should.
Correct Answer: B) Don't have to.
Correct Answer: A) Should.
Correct Answer: C) Should.
Correct Answer: D) You had better not drink coffee at nights.
Correct Answer: B) Had better.
Correct Answer: D) Should.
Correct Answer: C) I'd rather read a book.
Correct Answer: C) Had better not.
Correct Answer: D) Ought not.
Correct Answer: B) Use Should and Ought to give advice.
Correct Answer: D) Don't have to.
Correct Answer: B) Hadn't she?.
Correct Answer: A) Shouldn't.
Correct Answer: A) Ought to.
Correct Answer: B) Mustn't.
Correct Answer: B) Ought.
Correct Answer: A) Must.