Answer: A) Must have been.
Explanation for this question is being written.
Answer: E) To speculate about past events with certainty.
Answer: A) Can't have been.
Answer: A) They had played.
Answer: C) Must have eaten.
Answer: A) Certainty
Answer: A) Must have.
Answer: B) Wrong
Answer: A) Must have been napping.
Answer: A) I'm sure.
Answer: C) Must not have studied.
Answer: A) Past
Answer: D) Must have been.
Answer: B) Must have.
Answer: C) Must have been.
Answer: B) Can't have known.
Answer: B) Modal verb + have + past participle.
Answer: B) CAN'T
Answer: C) She must have been late for school yesterday.
Answer: A) Must have slept.
Answer: B) Must have been.
Answer: A) Must have deposit.
Answer: A) GUESS OR SPECULATE ABOUT THE PAST.
Answer: D) Couldn't have seen.
Answer: A) Must have left.
Answer: C) Must have rained.
Answer: B) Must
Answer: B) Must have read.
Answer: A) Can't have gone.
Answer: B) He must have studied Spanish.
Answer: B) Can't have.
Answer: C) Must
Answer: B) Must not have heard.
Answer: E) Must have.
Answer: B) Must have been doing.
Answer: D) Can't have been.
Answer: A) They must have accepted jobs overseas.
Answer: A) Must not have noticed.
Answer: A) Must have met.
Answer: C) Been able to.
Answer: A) Would have helped.
Answer: B) He cannot have known that his brother graduated with very high marks.
Answer: A) Yes
Answer: B) He must have had a bad diet.
Answer: D) Forfeiture of good conduct time allowance.
Answer: A) Couldn't have gone.