Answer: B) Ought not to.
Explanation for this question is being written.
Answer: A) SHOULD
Answer: B) Shouldn't
Answer: C) Should
Answer: C) To give advice.
Answer: C) Ought to.
Answer: A) Should
Answer: A) Learn, know.
Answer: B) You should study harder for the test.
Answer: B) Don't touch it.
Answer: C) You ought not to fight with your co-workers.
Answer: D) Should
Answer: A) You should have your eyes tested.
Answer: B) Should
Answer: C) Shouldn't
Answer: B) Invest
Answer: D) Shake hand with other people.
Answer: A) Had better.
Answer: B) Now or without waiting or thinking.
Answer: A) Shouldn't
Answer: B) Ought to.
Answer: B) Oughto
Answer: D) Ought to.
Answer: B) Yes
Answer: A) Find
Answer: B) Have
Answer: A) Hadn't you.
Answer: D) D
Answer: A) Should not.
Answer: A) Recommend
Answer: A) Help
Answer: B) Could
Answer: B) DON'T
Answer: A) It's not a good idea to say anything.
Answer: D) You shouldn't buy that old house.
Answer: C) C
Answer: A) Should be.