Answer: D) Ought to.
Explanation for this question is being written.
Answer: C) Should
Answer: A) Should
Answer: B) Shouldn't
Answer: D) Be able to complete.
Answer: D) Should hurry.
Answer: D) Should get.
Answer: B) Must
Answer: B) Ought to.
Answer: B) Should not have coffee.
Answer: A) Ought to.
Answer: D) Shouldn't
Answer: D) Should
Answer: C) Shouldn't
Answer: C) Giving advice.
Answer: B) Students should revise previous lessons before class.
Answer: D) They should go to the dentist.
Answer: C) Ought to study.
Answer: A) Close the app and open the correct one.
Answer: A) Shouldn't
Answer: A) You had better spend more time on your piano lessons.
Answer: B) Should
Answer: C) Should not.
Answer: C) You should have come to me for help.
Answer: D) Have been called.
Answer: B) Eats
Answer: D) Should have come.
Answer: C) Should do.
Answer: A) Should go.
Answer: C) Should I go.
Answer: A) Supposed to.
Answer: A) Should, shouldn't.
Answer: A) SHOULDN'T SKIP MEALS REGULARLY.
Answer: A) Do