Answer: B) Have known.
Explanation for this question is being written.
Answer: A) Has
Answer: A) Has happened.
Answer: B) Have
Answer: D) I have eaten bread.
Answer: A) Yes, I have watched a launch.
Answer: B) Yes, he has.
Answer: A) Have / visited.
Answer: A) Present Perfect.
Answer: C) Have
Answer: A) Has been.
Answer: C) Has called.
Answer: C) Have been conducted.
Answer: A) Have, been.
Answer: C) Yes, I have completed my degree.
Answer: C) Have just seen.
Answer: A) Present perfect.
Answer: A) Have just written.
Answer: A) Has, been watched.
Answer: C) Has finished.
Answer: B) Have just seen.
Answer: A) Have finished.
Answer: B) Has lived.
Answer: A) Has risen.
Answer: A) Have visited.
Answer: C) 've been.
Answer: C) They used to have three dogs.
Answer: B) Has taken.
Answer: B) They have eaten the fruit.
Answer: A) Has introduced.
Answer: A) Has finished.
Answer: A) Have been.
Answer: A) We have seen that dog at the park before.
Answer: B) Have eaten.
Answer: C) Have read.
Answer: B) Already
Answer: A) Have tried.
Answer: A) Has just forgotten.
Answer: B) Present perfect tense.
Answer: D) I have learned to play the guitar.
Answer: B) Have waited.
Answer: C) Has won.
Answer: A) Have been sold.
Answer: A) She has finished her homework.
Answer: D) Have been.
Answer: C) I have been to Paris.
Answer: E) Have seen.
Answer: D) Have eaten.
Answer: B) Has won.
Answer: B) Incorrect
Answer: A) Has traveled.
Answer: B) Has
Answer: D) Have worked.
Answer: A) Has found.
Answer: E) Has
Answer: B) Had