Answer: A) Attending
Explanation for this question is being written.
Answer: B) Eating
Answer: C) Studying
Answer: B) Having booked a ticket, we went to the play.
Answer: B) Meeting
Answer: B) Practising
Answer: C) Training
Answer: A) Going
Answer: D) Running
Answer: A) The boy is running fast.
Answer: A) Subject+had+been+verb-ing+complement.
Answer: A) To become.
Answer: C) Sitting
Answer: A) Practising
Answer: A) Working
Answer: A) Interviewing
Answer: B) Drawing
Answer: B) Howling
Answer: A) Lying
Answer: A) Reading / watching.
Answer: A) Yes, this sentence has progressive tense.
Answer: C) He is going to.
Answer: B) Cleaning
Answer: B) Walking
Answer: C) Laughing
Answer: A) Are not listening, are singing.
Answer: C) I see a present and past participle in that sentence.
Answer: C) Reading
Answer: A) Sing
Answer: C) Doing
Answer: A) Watching
Answer: C) Using
Answer: A) Being
Answer: B) Having
Answer: B) Keeping
Answer: C) Have been working.
Answer: B) Signalling
Answer: B) Going
Answer: A) Ironing
Answer: D) Learning
Answer: B) Reading
Answer: D) Writing a letter, Emily was listening to her favorite music.
Answer: A) To inform.
Answer: C) Travelling
Answer: C) You're
Answer: D) Reading
Answer: C) Cooking
Answer: C) Noun
Answer: A) Avoid
Answer: A) Listening
Answer: B) Meaning
Answer: A) Dancing
Answer: A) Being told.
Answer: A) True
Answer: A) Forgetting
Answer: B) I am thinking about his cats, too.
Answer: B) Watching-going
Answer: A) Sufriendo
Answer: C) Am having.