Answer: A) Shouldn't have left.
Explanation for this question is being written.
Answer: A) Should have.
Answer: C) Should have.
Answer: A) Shouldn't have had.
Answer: B) Oughtn't to have been using.
Answer: C) Should have remembered.
Answer: C) Should have said.
Answer: A) Should have sent her a text.
Answer: A) Should have helped.
Answer: D) Should have worn.
Answer: A) Shouldn't have.
Answer: B) Should have started.
Answer: A) Should have done.
Answer: C) Obligation
Answer: B) Should have.
Answer: B) Should have been.
Answer: B) Doesn't
Answer: C) Should have arrived.
Answer: B) Wouldn't of known.
Answer: A) Shouldn't have ignored.
Answer: B) Ought to have bought.
Answer: A) Have + past participle.
Answer: A) Would
Answer: A) Should have studied / would have been.
Answer: D) I should have helped my parents last weekend.
Answer: A) Should have gone.
Answer: C) Shouldn't have.
Answer: A) I wouldn't have lent her money.
Answer: A) Should
Answer: A) I wish I had studied for the exam.
Answer: A) GONE
Answer: A) Should have studied.
Answer: D) She should have closed the windows when she left for work.
Answer: C) Past perfect conditional.
Answer: B) You should have written it down.
Answer: A) Should have arrived.
Answer: D) He shouldn't have smoked.
Answer: D) Shouldn't have allowed.
Answer: B) Should
Answer: C) Should have done.
Answer: B) Should have studied.
Answer: A) You should have told me about the problem.
Answer: B) Shouldn't have given.
Answer: C) Shouldn't have bought.
Answer: C) Should have paid.
Answer: B) Should have driven.
Answer: A) Should/ought to/could have told.
Answer: C) Should have told.
Answer: C) Regret because they should have left.
Answer: B) Should have bought.
Answer: A) True